No, "twenty second" is not hyphenated when used as a noun or an adjective. It should be written as two separate words, such as "twenty second" when referring to the ordinal number. However, if used in a compound adjective before a noun, it can be hyphenated, as in "twenty-second anniversary."
Yes it should be hyphenated.
No, "twenty-ninth" is hyphenated. When writing out ordinal numbers that combine a number and a suffix (like -th), a hyphen is used to connect the two parts. So, it should be written as "twenty-ninth."
This is in two words, "twenty fourth," hyphenated in the US as twenty-fourth (24th).
It is neither. The word is hyphenated, like so: twenty-third.
21st is usually hyphenated when spelt. Dictionaries list it as 'twenty-first'. However, as a book/article title, or in company names, it is sometimes written as Twenty First ... as in 'Twenty First Century Poets', but, as this could be interpreted as meaning a book about 1st century poets, a hyphen would remove any ambiguity e.g. written as 'Twenty-first Century Poets' or 'Twenty-First Century Poets' (unless, of course, the book is actually about 1st century poets, in which case a better title would be 'Twenty First-Century Poets'!)
twenty-seven
The spelling would be "one twenty-fourth" or 1/24.(the denominator is separately hyphenated, as in twenty-one twenty-fourths, 21/24)
Any two or three word adjective should be hyphenated ONLY when used as an adjective. Example, "It was his thirty-second birthday." "There was a thirty second delay in rebroadcasting Carl's speech."
The second word should not be capitalized
The number 428 is "four hundred twenty-eight." (It is hyphenated when used as an adjective in English.)
The Twenty-Second Day was created in 2007.
Generally, when spelt out in words in English, you hyphenate the numbers between 20 and 99 which have digits other than 0 in the units column - for example, twenty-one, twenty-two, twenty-three.... ninety-eight, ninety-nine.