1981 = MCMLXXXI
1981 in Roman numerals is written as MCMLXXXI.
8 8 1981 in Roman numerals is VIII VIII MDCCCCLXXXI or IIX IIX XXMMI. Note that 1981 is not MCMLXXXI in Roman numerals.
The date 10-02-1981 in Roman numerals would be X.II.MCMLXXXI
The date 01-06-1981 in Roman numerals is I.VI.MCMLXXXI
21061981 is 21-06-1981 which can be written as XXI.VI.MCMLXXXI
In todays notation of Roman numerals: I-XII-MCMLXXXI
X-XII-MCMDXXXI
In Roman numerals the number 77 is written as LXXVII.
1900 is written in Roman numerals as MCM.
The number 2100 written in Roman numerals is MMC
MCMLXXXI is already a Roman numeral. In Hindu-Arabic numerals it equates to 1981.
887 in Roman numerals is DCCCLXXXVII