21

Summary

21 is a positive integer^[1]. 21 ranks in the top 7% of positive_integer entities by monthly Wikipedia readership (218 views/month).^[2]

Key Facts

• 21's image is recorded as Zlin skyscraper 01.jpg^[3].
• 21's instance of is recorded as positive integer^[4].
• 21's instance of is recorded as deficient number^[5].
• 21's instance of is recorded as triangular number^[6].
• 21's instance of is recorded as odd number^[7].
• 21's instance of is recorded as centered pentachoric number^[8].
• 21's instance of is recorded as octagonal number^[9].
• 21's instance of is recorded as highly touchable number^[10].
• 21's instance of is recorded as Fibonacci number^[11].
• 21's instance of is recorded as composite number^[12].
• 21's instance of is recorded as harshad number^[13].
• 21's follows is recorded as 20^[14].
• 21's followed by is recorded as 22^[15].
• 21's Commons category is recorded as 21 (number)^[16].
• 21's pronunciation audio is recorded as Cs-21.ogg^[17].
• 21's pronunciation audio is recorded as Fr-21.ogg^[18].
• 21's pronunciation audio is recorded as LL-Q150 (fra)-Guilhelma-21.wav^[19].
• 21's pronunciation audio is recorded as Lb-eenanzwanzeg.ogg^[20].
• 21's Unicode character is recorded as ㉑^[21].
• 21's spoken text audio is recorded as Nl-21 (getal)-article.ogg^[22].
• 21's numeric value is recorded as {'amount': '+21'}^[23].
• 21's OmegaWiki Defined Meaning is recorded as 7046^[24].
• 21's different from is recorded as 21^[25].
• 21's BabelNet ID is recorded as 00000081n^[26].
• 21's label in sign language is recorded as LSQ 21.jpg^[27].

Why It Matters

21 ranks in the top 7% of positive_integer entities by monthly Wikipedia readership (218 views/month).^[2] 21 has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.^[28] 21 is known by 49 alternative names across languages and contexts.^[29]