Il numero romano MMCMI nel sistema decimale vale: 2901.
MMCMI in latino si scrive duo milia nongenti unus,
mentre in italiano duemilanovecentouno.
MMDCCCLXXXII, MMDCCCLXXXIII, MMDCCCLXXXIV, MMDCCCLXXXV, MMDCCCLXXXVI, MMDCCCLXXXVII, MMDCCCLXXXVIII, MMDCCCLXXXIX, MMDCCCXC, MMDCCCXCI, MMDCCCXCII, MMDCCCXCIII, MMDCCCXCIV, MMDCCCXCV, MMDCCCXCVI, MMDCCCXCVII, MMDCCCXCVIII, MMDCCCXCIX, MMCM, MMCMII, MMCMIII, MMCMIV, MMCMV, MMCMVI, MMCMVII, MMCMVIII, MMCMIX, MMCMX, MMCMXI, MMCMXII, MMCMXIII, MMCMXIV, MMCMXV, MMCMXVI, MMCMXVII, MMCMXVIII, MMCMXIX, MMCMXX