Il numero romano MMMDCCXII nel sistema decimale vale: 3712.
MMMDCCXII in latino si scrive tria milia septingenti duodecim,
mentre in italiano tremilasettecentododici.
MMMDCXCIII, MMMDCXCIV, MMMDCXCV, MMMDCXCVI, MMMDCXCVII, MMMDCXCVIII, MMMDCXCIX, MMMDCC, MMMDCCI, MMMDCCII, MMMDCCIII, MMMDCCIV, MMMDCCV, MMMDCCVI, MMMDCCVII, MMMDCCVIII, MMMDCCIX, MMMDCCX, MMMDCCXI, MMMDCCXIII, MMMDCCXIV, MMMDCCXV, MMMDCCXVI, MMMDCCXVII, MMMDCCXVIII, MMMDCCXIX, MMMDCCXX, MMMDCCXXI, MMMDCCXXII, MMMDCCXXIII, MMMDCCXXIV, MMMDCCXXV, MMMDCCXXVI, MMMDCCXXVII, MMMDCCXXVIII, MMMDCCXXIX, MMMDCCXXX, MMMDCCXXXI