2001 in Roman numerals is MMI.
M = 1000; I = 1.
M + M = 1000 + 1000 = 2000.
I = 1; 2000 + 1 = 2001.
It is: 2001 = MMI
The equivalent in Roman numerals are: XII-I-MMI
5 January 2001 can be represented as V.I.MMI in Roman numerals.
MMI
The date January 8, 2001, is written as VIII.I.MMCI in Roman numerals.