123011122211212 has 12 divisors (see below), whose sum is σ = 215407545640560. Its totient is φ = 61466109171056.

The previous prime is 123011122211209. The next prime is 123011122211261. The reversal of 123011122211212 is 212112221110321.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9862976623 + ... + 9862989094.

It is an arithmetic number, because the mean of its divisors is an integer number (17950628803380).

Almost surely, 2^{123011122211212} is an apocalyptic number.

It is an amenable number.

123011122211212 is a deficient number, since it is larger than the sum of its proper divisors (92396423429348).

123011122211212 is a wasteful number, since it uses less digits than its factorization.

123011122211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19725967280 (or 19725967278 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 22.

Adding to 123011122211212 its reverse (212112221110321), we get a palindrome (335123343321533).

The spelling of 123011122211212 in words is "one hundred twenty-three trillion, eleven billion, one hundred twenty-two million, two hundred eleven thousand, two hundred twelve".