Il numero romano MMDCXXII nel sistema decimale vale: 2622.
MMDCXXII in latino si scrive duo milia sescenti viginti duo,
mentre in italiano duemilaseicentoventidue.
MMDCIII, MMDCIV, MMDCV, MMDCVI, MMDCVII, MMDCVIII, MMDCIX, MMDCX, MMDCXI, MMDCXII, MMDCXIII, MMDCXIV, MMDCXV, MMDCXVI, MMDCXVII, MMDCXVIII, MMDCXIX, MMDCXX, MMDCXXI, MMDCXXIII, MMDCXXIV, MMDCXXV, MMDCXXVI, MMDCXXVII, MMDCXXVIII, MMDCXXIX, MMDCXXX, MMDCXXXI, MMDCXXXII, MMDCXXXIII, MMDCXXXIV, MMDCXXXV, MMDCXXXVI, MMDCXXXVII, MMDCXXXVIII, MMDCXXXIX, MMDCXL, MMDCXLI