21 (alƙalami)

21 (ashirin da ɗaya) alƙalami ne, tsakanin 20 da 22.

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Cardinalashirin-ɗaya
Factorization (en) Fassara3 × 7
Greek numeralΚΑ´
Roman numeralXXI
Binary101012
Ternary2103
Octal (en) Fassara258
Duodecimal (en) Fassara1912
Hexadecimal (en) Fassara1516