22 (number)

22 (twenty-two) is the natural number following 21 and preceding 23.

← 21 22 23 →
[[{{#expr: (floor({{{number}}} div {{{factor}}})) * {{{factor}}}+({{{1}}}*{{{factor}}} div 10)}} (number)|{{#switch:{{{1}}}|-1={{#ifexpr:(floor({{{number}}} div 10)) = 0|-1|←}}|10=→|#default={{#expr:(floor({{{number}}} div {{{factor}}})) * {{{factor}}}+({{{1}}}*{{{factor}}} div 10)}}}}]] [[{{#expr: (floor({{{number}}} div {{{factor}}})) * {{{factor}}}+({{{1}}}*{{{factor}}} div 10)}} (number)|{{#switch:{{{1}}}|-1={{#ifexpr:(floor({{{number}}} div 10)) = 0|-1|←}}|10=→|#default={{#expr:(floor({{{number}}} div {{{factor}}})) * {{{factor}}}+({{{1}}}*{{{factor}}} div 10)}}}}]] [[{{#expr: (floor({{{number}}} div {{{factor}}})) * {{{factor}}}+({{{1}}}*{{{factor}}} div 10)}} (number)|{{#switch:{{{1}}}|-1={{#ifexpr:(floor({{{number}}} div 10)) = 0|-1|←}}|10=→|#default={{#expr:(floor({{{number}}} div {{{factor}}})) * {{{factor}}}+({{{1}}}*{{{factor}}} div 10)}}}}]] [[{{#expr: (floor({{{number}}} div {{{factor}}})) * {{{factor}}}+({{{1}}}*{{{factor}}} div 10)}} (number)|{{#switch:{{{1}}}|-1={{#ifexpr:(floor({{{number}}} div 10)) = 0|-1|←}}|10=→|#default={{#expr:(floor({{{number}}} div {{{factor}}})) * {{{factor}}}+({{{1}}}*{{{factor}}} div 10)}}}}]] [[{{#expr: (floor({{{number}}} div {{{factor}}})) * {{{factor}}}+({{{1}}}*{{{factor}}} div 10)}} (number)|{{#switch:{{{1}}}|-1={{#ifexpr:(floor({{{number}}} div 10)) = 0|-1|←}}|10=→|#default={{#expr:(floor({{{number}}} div {{{factor}}})) * {{{factor}}}+({{{1}}}*{{{factor}}} div 10)}}}}]] [[{{#expr: (floor({{{number}}} div {{{factor}}})) * {{{factor}}}+({{{1}}}*{{{factor}}} div 10)}} (number)|{{#switch:{{{1}}}|-1={{#ifexpr:(floor({{{number}}} div 10)) = 0|-1|←}}|10=→|#default={{#expr:(floor({{{number}}} div {{{factor}}})) * {{{factor}}}+({{{1}}}*{{{factor}}} div 10)}}}}]] [[{{#expr: (floor({{{number}}} div {{{factor}}})) * {{{factor}}}+({{{1}}}*{{{factor}}} div 10)}} (number)|{{#switch:{{{1}}}|-1={{#ifexpr:(floor({{{number}}} div 10)) = 0|-1|←}}|10=→|#default={{#expr:(floor({{{number}}} div {{{factor}}})) * {{{factor}}}+({{{1}}}*{{{factor}}} div 10)}}}}]] [[{{#expr: (floor({{{number}}} div {{{factor}}})) * {{{factor}}}+({{{1}}}*{{{factor}}} div 10)}} (number)|{{#switch:{{{1}}}|-1={{#ifexpr:(floor({{{number}}} div 10)) = 0|-1|←}}|10=→|#default={{#expr:(floor({{{number}}} div {{{factor}}})) * {{{factor}}}+({{{1}}}*{{{factor}}} div 10)}}}}]] [[{{#expr: (floor({{{number}}} div {{{factor}}})) * {{{factor}}}+({{{1}}}*{{{factor}}} div 10)}} (number)|{{#switch:{{{1}}}|-1={{#ifexpr:(floor({{{number}}} div 10)) = 0|-1|←}}|10=→|#default={{#expr:(floor({{{number}}} div {{{factor}}})) * {{{factor}}}+({{{1}}}*{{{factor}}} div 10)}}}}]] [[{{#expr: (floor({{{number}}} div {{{factor}}})) * {{{factor}}}+({{{1}}}*{{{factor}}} div 10)}} (number)|{{#switch:{{{1}}}|-1={{#ifexpr:(floor({{{number}}} div 10)) = 0|-1|←}}|10=→|#default={{#expr:(floor({{{number}}} div {{{factor}}})) * {{{factor}}}+({{{1}}}*{{{factor}}} div 10)}}}}]] [[{{#expr: (floor({{{number}}} div {{{factor}}})) * {{{factor}}}+({{{1}}}*{{{factor}}} div 10)}} (number)|{{#switch:{{{1}}}|-1={{#ifexpr:(floor({{{number}}} div 10)) = 0|-1|←}}|10=→|#default={{#expr:(floor({{{number}}} div {{{factor}}})) * {{{factor}}}+({{{1}}}*{{{factor}}} div 10)}}}}]] [[{{#expr: (floor({{{number}}} div {{{factor}}})) * {{{factor}}}+({{{1}}}*{{{factor}}} div 10)}} (number)|{{#switch:{{{1}}}|-1={{#ifexpr:(floor({{{number}}} div 10)) = 0|-1|←}}|10=→|#default={{#expr:(floor({{{number}}} div {{{factor}}})) * {{{factor}}}+({{{1}}}*{{{factor}}} div 10)}}}}]] List of numbers — Integers ← 0 10 20 30 40 50 60 70 80 90 →
Cardinal	twenty-two
Ordinal	22nd (twenty-second)
Factorization	2 × 11
Divisors	1, 2, 11, 22
Greek numeral	ΚΒ´
Roman numeral	XXII
Binary	101102
Ternary	2113
Quaternary	1124
Quinary	425
Senary	346
Octal	268
Duodecimal	1A12
Hexadecimal	1616
Vigesimal	1220
Base 36	M36

In mathematics

• 22 is a deficient number.[1]
• 22 is an even composite number and a semiprime;[2] its proper divisors are 1, 2, and 11.
• 22 is a pentagonal number[3] and a centered heptagonal number.[4]
• When cutting a circle with just six line segments, the maximum number of pieces that can be so created is 22,[5] thus 22 is a central polygonal number (see lazy caterer's sequence).[6]
• 22 is the number of partitions of 8.
• 22 is the sum of the totient function for the first eight integers.[7]
• 22 is a Perrin number, preceded in the sequence by 10, 12, and 17.[8]
• 22 divided by 7 approximates the irrational number π, the ratio of the circumference of a circle to its diameter.
• 22 is an Erdős–Woods number, since it is possible to find sequences of 22 consecutive integers such that each inner member shares a factor with either the first or the last member.[9]
• 22 is a Smith number in base 10.[10]
• "2-2" is the only fixed point of John Conway's look-and-say function.[11]

In physics and chemistry

• 22 is the atomic number of titanium.

In aircraft

• 22 is the designation of the USAF stealth fighter, the F-22 Raptor.

In art, entertainment, and media

In music

• "Twenty Two" is a song by:
  • Karma to Burn 2007[12]
  • The Vicar (2013)[13]
  • Jordan Sweeney (2008)[14]
  • The Good Life (2000)[15]
  • Sweet Nectar (1996)[16]
  • American Generals (2004)[17]
  • Dan Anderson (2007)[18]
  • Bad Cash Quartet (2006)[19]
  • Millencolin (1999)[20]
  • Enter the Worship Circle (2005)[21]
  • Blank Dogs (2008)[22]
  • Al Candello (2002)[23]
  • Amen Dunes (2018)[24]
• In Jay-Z's song "22 Two's", he rhymes the words: too, to, and two, 22 times in the first verse.[25]
• "22 Acacia Avenue" is a song by Iron Maiden on the album The Number of the Beast[26]
• Catch 22 is an album by death metal band Hypocrisy[27]
• "22" is a song by Lily Allen on the album It's Not Me, It's You.
• 22 Dreams is a song and album by Paul Weller. The album contains 22 songs on it.[28]
• The Norwegian electronica project Ugress uses 22 as a recurring theme. All four albums feature a track with 22 in the title.[29][30][31]
• "22" is a song by Taylor Swift on her fourth album Red[32]
• "The Number 22" is a song by Ashbury Heights on the album The Looking Glass Society.[33]
• 22, A Million is an album by Bon Iver. The first track of the album is called "22 (OVER SOON)".[34]
• Cubic 22 was a Belgian techno duo.[35]
• "22" is a song by the English alternative rock band Deaf Havana on their album Old Souls[36]
• "22" is a song by the Irish singer Sarah McTernan.[37] She will represent Ireland with this song in Eurovision 2019.

In other fields

• Catch-22 (1961), Joseph Heller's novel, and its 1970 film adaptation gave rise to the expression of logic "catch-22".[38]
• Revista 22 is a magazine published in Romania.
• There are 22 stars in the Paramount Pictures logo.[39]
• "Twenty Two" (February 10, 1961) is Season 2–episode 17 (February 10, 1961) of the 1959-64 TV series The Twilight Zone, in which a hospitalized dancer has nightmares about a sinister nurse inviting her to Room 22, the hospital morgue.
• Traditional Tarot decks have 22 cards with allegorical subjects. These serve as trump cards in the game. The Fool is usually a kind of wild-card among the trumps and unnumbered, so the highest trump is numbered 21. Occult Tarot decks usually have 22 similar cards which are called Major Arcana by fortune-tellers. Occultists have related this number to the 22 letters of the Hebrew alphabet and the 22 paths in the Kabbalistic Tree of Life.

In computing and technology

• 22 is the standard port number for the Secure Shell protocol

In culture and religion

• There are 22 letters in the Hebrew alphabet.[40]
• In the Kabbalah, there are 22 paths between the Sephirot.

In sports

• In both American football and association football, a total of 22 players (counting both teams) start the game, and this is also the maximum number of players that can be legally involved in play at any given time.
• In Australian rules football, each team is allowed a squad of 22 players (18 on the field and 4 interchanges).
• The length of a cricket pitch is 22 yards.
• In rugby union, the "22" is a line in each half of the field which is 22 meters from the respective try line. It has significance in a number of laws particularly relating to kicking the ball away.
• A snooker game (called a "frame") starts with 22 coloured balls at specified locations on the table (15 red balls and 7 others).

In weights and measures

• The number of yards in a chain.

In other uses

Twenty-two may also refer to:

• 22 is the number of the French department Côtes-d'Armor
• "22" is a common name for the .22 calibre .22 Long Rifle cartridge.
• In French jargon, "22" is used as a phrase to warn of the coming of the police (typically "22, v'là les flics !" (In English: "5-0! Cops!")
• In photography, f/22 is the largest f-stop (and thus smallest aperture) available on most lenses made for single-lens reflex cameras
• The total number of cases on Deal or No Deal

See also

• Catch 22 (disambiguation)
• List of highways numbered 22
• Synchronicity

References

1. Weisstein, Eric W. "Deficient Number". mathworld.wolfram.com. Retrieved 2020-08-12.
2. Weisstein, Eric W. "Semiprime". mathworld.wolfram.com. Retrieved 2020-08-12.
3. Sloane, N. J. A. (ed.). "Sequence A000326 (Pentagonal numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-31.
4. Sloane, N. J. A. (ed.). "Sequence A069099 (Centered heptagonal numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-31.
5. Wells, D. The Penguin Dictionary of Curious and Interesting Numbers London: Penguin Group. (1986): 31
6. Sloane, N. J. A. (ed.). "Sequence A000124 (Central polygonal numbers (the Lazy Caterer's sequence))". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-31.
7. Sloane, N. J. A. (ed.). "Sequence A002088 (Sum of totient function)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-31.
8. Sloane, N. J. A. (ed.). "Sequence A001608 (Perrin sequence)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-31.
9. Sloane, N. J. A. (ed.). "Sequence A059756 (Erdős-Woods numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-31.
10. Sloane, N. J. A. (ed.). "Sequence A006753 (Smith numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-31.
11. Martin, Oscar (2006). "Look-and-Say Biochemistry: Exponential RNA and Multistranded DNA" (PDF). American Mathematical Monthly. Mathematical association of America. 113 (4): 289–307. doi:10.2307/27641915. ISSN 0002-9890. Archived from the original (PDF) on 2006-12-24. Retrieved 2018-11-21.
12. Twenty Two - Karma to Burn | Song Info | AllMusic, retrieved 2020-08-12
13. Twenty Two - The Vicar | Song Info | AllMusic, retrieved 2020-08-12
14. Twenty Two - Jordan Sweeney | Song Info | AllMusic, retrieved 2020-08-12
15. Twenty Two - The Good Life | Song Info | AllMusic, retrieved 2020-08-12
16. Twenty Two - Sweet Nectar | Song Info | AllMusic, retrieved 2020-08-12
17. Twenty Two - American Generals | Song Info | AllMusic, retrieved 2020-08-12
18. Twenty Two - Dan Anderson | Song Info | AllMusic, retrieved 2020-08-12
19. Twenty Two - Bad Cash Quartet | Song Info | AllMusic, retrieved 2020-08-12
20. Twenty Two - Millencolin | Song Info | AllMusic, retrieved 2020-08-12
21. Twenty Two - Enter the Worship Circle | Song Info | AllMusic, retrieved 2020-08-12
22. Twenty Two - Blank Dogs | Song Info | AllMusic, retrieved 2020-08-12
23. Twenty Two - Al Candello | Song Info | AllMusic, retrieved 2020-08-12
24. Twenty Two - Amen Dunes | Song Info | AllMusic, retrieved 2020-08-12
25. 22 Two's - Jay-Z | Song Info | AllMusic, retrieved 2020-08-12
26. 22 Acacia Avenue - Iron Maiden | Song Info | AllMusic, retrieved 2020-08-12
27. Catch 22 - Hypocrisy | Songs, Reviews, Credits | AllMusic, retrieved 2020-08-12
28. 22 Dreams - Paul Weller | Songs, Reviews, Credits | AllMusic, retrieved 2020-08-12
29. "Ugress | Album Discography". AllMusic. Retrieved 2020-08-12.
30. Cinematronics - Ugress | Songs, Reviews, Credits | AllMusic, retrieved 2020-08-12
31. Unicorn - Ugress | Songs, Reviews, Credits | AllMusic, retrieved 2020-08-12
32. Twenty Two - The Vicar | Song Info | AllMusic, retrieved 2020-08-12
33. Number 22 - Ashbury Heights | Song Info | AllMusic, retrieved 2020-08-12
34. 22, A Million - Bon Iver | Songs, Reviews, Credits | AllMusic, retrieved 2020-08-12
35. "Cubic 22 | Songs". AllMusic. Retrieved 2020-08-12.
36. 22 - Deaf Havana | Song Info | AllMusic, retrieved 2020-08-12
37. 22 - Sarah McTernan | Song Info | AllMusic, retrieved 2020-08-12
38. "Definition of CATCH-22". www.merriam-webster.com. Retrieved 2020-08-12.
39. "Paramount Pictures' Logo Started as a Desktop Doodle, and Has Endured for 105 Years". Retrieved 2020-08-12.
40. González-Wippler, Migene (1991). The Complete Book of Amulets & Talismans. Llewellyn Worldwide. p. 87. ISBN 978-0-87542-287-9.

External links

• "The Number 22 at The Database of Number Correlations". Virtuescience.