Polyhydroxylated fullerene C_60(OH)_ n (with an estimated number of hydroxyl groups n = 38–44) synthesized from pure fullerene by mixing a benzene solution of C_60 with a NaOH aqueous solution in the presence of a catalyst was studied with ^1H and ^13C solid-state nuclear magnetic resonance. Possible features of the structure of a molecule shell were revealed from ^1H NMR data. The ^13C spectrum showed a peak splitting with an increase in temperature, which is probably due to fullerenol isomers.