21 (zuzzwa twang nkyang)

21

positive integer, deficient number, triangular number, odd number, centered pentachoric number, octagonal number, highly touchable number, Fibonacci number, composite number, harshad number

Name in hiero markup	V20-V20-Z1
Follows	20
Followed by	22
Prime factor	3, 7
Unicode character	㉑

21 (nswak-nhwa bu̱ a̱yring) A̱yet zṵzzwa twang nkyang ji a̱ tsuup nswak nhwa bu̱ a̱hwa (22) ni a̱won a̱ shyi a̱zanson nswak nhwa (20).

kasa̱ ko karam ka zun shyyi kafwun ni (koren sencuri) nu a̱yet sencuri swang hwa bu ayyiring (the 21st century AD), a̱ huhwa Gregorian kalanda.