201023012122 has 16 divisors (see below), whose sum is σ = 319598683560. Its totient is φ = 94502222848.

The previous prime is 201023012111. The next prime is 201023012137. The reversal of 201023012122 is 221210320102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 185942926521 + 15080085601 = 431211^2 + 122801^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201023012096 and 201023012105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2992597 + ... + 3059032.

Almost surely, 2^201023012122 is an apocalyptic number.

201023012122 is a deficient number, since it is larger than the sum of its proper divisors (118575671438).

201023012122 is a wasteful number, since it uses less digits than its factorization.

201023012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6052625.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 201023012122 its reverse (221210320102), we get a palindrome (422233332224).

The spelling of 201023012122 in words is "two hundred one billion, twenty-three million, twelve thousand, one hundred twenty-two".