311022122012 has 24 divisors (see below), whose sum is σ = 622668215904. Its totient is φ = 133161486912.

The previous prime is 311022122003. The next prime is 311022122107. The reversal of 311022122012 is 210221220113.

It is a congruent number.

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, 5542763 + ... + 5598594.

It is an arithmetic number, because the mean of its divisors is an integer number (25944508996).

Almost surely, 2^311022122012 is an apocalyptic number.

It is an amenable number.

311022122012 is an abundant number, since it is smaller than the sum of its proper divisors (311646093892).

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

311022122012 is a wasteful number, since it uses less digits than its factorization.

311022122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11142365 (or 11142363 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 311022122012 its reverse (210221220113), we get a palindrome (521243342125).

The spelling of 311022122012 in words is "three hundred eleven billion, twenty-two million, one hundred twenty-two thousand, twelve".