211321012213220 has 96 divisors (see below), whose sum is σ = 546678724451328. Its totient is φ = 66818982131712.

The previous prime is 211321012213211. The next prime is 211321012213261. The reversal of 211321012213220 is 22312210123112.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50626469 + ... + 54641388.

It is an arithmetic number, because the mean of its divisors is an integer number (5694570046368).

Almost surely, 2^{211321012213220} is an apocalyptic number.

211321012213220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211321012213220 is an abundant number, since it is smaller than the sum of its proper divisors (335357712238108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211321012213220 is a wasteful number, since it uses less digits than its factorization.

211321012213220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105268989 (or 105268987 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 211321012213220 its reverse (22312210123112), we get a palindrome (233633222336332).

The spelling of 211321012213220 in words is "two hundred eleven trillion, three hundred twenty-one billion, twelve million, two hundred thirteen thousand, two hundred twenty".