31211031122122 has 16 divisors (see below), whose sum is σ = 47852237496960. Its totient is φ = 15263977592448.

The previous prime is 31211031122113. The next prime is 31211031122153. The reversal of 31211031122122 is 22122113011213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31211031122093 and 31211031122102.

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, 923058663 + ... + 923092474.

It is an arithmetic number, because the mean of its divisors is an integer number (2990764843560).

Almost surely, 2^{31211031122122} is an apocalyptic number.

31211031122122 is a deficient number, since it is larger than the sum of its proper divisors (16641206374838).

31211031122122 is a wasteful number, since it uses less digits than its factorization.

31211031122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846151325.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 31211031122122 its reverse (22122113011213), we get a palindrome (53333144133335).

The spelling of 31211031122122 in words is "thirty-one trillion, two hundred eleven billion, thirty-one million, one hundred twenty-two thousand, one hundred twenty-two".