Il numero romano MMCDXXII nel sistema decimale vale: 2422.
MMCDXXII in latino si scrive duo milia quadringenti viginti duo,
mentre in italiano duemilaquattrocentoventidue.
MMCDIII, MMCDIV, MMCDV, MMCDVI, MMCDVII, MMCDVIII, MMCDIX, MMCDX, MMCDXI, MMCDXII, MMCDXIII, MMCDXIV, MMCDXV, MMCDXVI, MMCDXVII, MMCDXVIII, MMCDXIX, MMCDXX, MMCDXXI, MMCDXXIII, MMCDXXIV, MMCDXXV, MMCDXXVI, MMCDXXVII, MMCDXXVIII, MMCDXXIX, MMCDXXX, MMCDXXXI, MMCDXXXII, MMCDXXXIII, MMCDXXXIV, MMCDXXXV, MMCDXXXVI, MMCDXXXVII, MMCDXXXVIII, MMCDXXXIX, MMCDXL, MMCDXLI