Il numero romano MDXXII nel sistema decimale vale: 1522.
MDXXII in latino si scrive mille quingenti viginti duo,
mentre in italiano millecinquecentoventidue.
MDIII, MDIV, MDV, MDVI, MDVII, MDVIII, MDIX, MDX, MDXI, MDXII, MDXIII, MDXIV, MDXV, MDXVI, MDXVII, MDXVIII, MDXIX, MDXX, MDXXI, MDXXIII, MDXXIV, MDXXV, MDXXVI, MDXXVII, MDXXVIII, MDXXIX, MDXXX, MDXXXI, MDXXXII, MDXXXIII, MDXXXIV, MDXXXV, MDXXXVI, MDXXXVII, MDXXXVIII, MDXXXIX, MDXL, MDXLI