21 in words

twenty-one

21 in words (US style)

21 written out

Form	Spelling
US English	twenty-one
UK English	twenty-one
Uppercase	TWENTY-ONE
Ordinal	21st – twenty-first
Roman numerals	XXI

On a check: Twenty-one and 00/100 dollars.

FAQ

How do you spell 21 in words?

21 is spelled "twenty-one".

How do you write 21 on a check?

Write "Twenty-one and 00/100" on the dollars line.

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