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Anonymous
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XXI is the Roman numeral for 21.
The Roman numeral of XXI is equivalent to 21
21 4
XXI = 21
If you mean MMXXI then it is the equivalent of 2021
if you mean XXI -- that is equal to 21
X is 10, two X's would be 20, I is 1 and since it comes after the XX, XXI would be 21.
XXI is the same thing as 21.
Freak XXI was created in 1998.
Hespèrion XXI was created in 1974.
Converxencia XXI was created in 2009.