201021222111210 has 48 divisors (see below), whose sum is σ = 545379315646464. Its totient is φ = 51274978393056.

The previous prime is 201021222111161. The next prime is 201021222111239. The reversal of 201021222111210 is 12111222120102.

201021222111210 is a `hidden beast` number, since 2 + 0 + 10 + 212 + 221 + 11 + 210 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48555848682 + ... + 48555852821.

It is an arithmetic number, because the mean of its divisors is an integer number (11362069075968).

Almost surely, 2^{201021222111210} is an apocalyptic number.

201021222111210 is an abundant number, since it is smaller than the sum of its proper divisors (344358093535254).

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

201021222111210 is a wasteful number, since it uses less digits than its factorization.

201021222111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97111701539 (or 97111701536 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 201021222111210 its reverse (12111222120102), we get a palindrome (213132444231312).

The spelling of 201021222111210 in words is "two hundred one trillion, twenty-one billion, two hundred twenty-two million, one hundred eleven thousand, two hundred ten".