201021122012022 has 80 divisors (see below), whose sum is σ = 486365067674640. Its totient is φ = 61689453069888.

The previous prime is 201021122011999. The next prime is 201021122012069. The reversal of 201021122012022 is 220210221120102.

It is a happy number.

201021122012022 is a `hidden beast` number, since 20 + 10 + 211 + 220 + 1 + 202 + 2 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 201021122011986 and 201021122012004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 125127453 + ... + 126723800.

It is an arithmetic number, because the mean of its divisors is an integer number (6079563345933).

Almost surely, 2^{201021122012022} is an apocalyptic number.

201021122012022 is an abundant number, since it is smaller than the sum of its proper divisors (285343945662618).

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

201021122012022 is a wasteful number, since it uses less digits than its factorization.

201021122012022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251851659 (or 251851650 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 201021122012022 its reverse (220210221120102), we get a palindrome (421231343132124).

The spelling of 201021122012022 in words is "two hundred one trillion, twenty-one billion, one hundred twenty-two million, twelve thousand, twenty-two".