311221032210012 has 48 divisors (see below), whose sum is σ = 726889216435200. Its totient is φ = 103639413252480.

The previous prime is 311221032209999. The next prime is 311221032210083. The reversal of 311221032210012 is 210012230122113.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 57089439 + ... + 62302857.

It is an arithmetic number, because the mean of its divisors is an integer number (15143525342400).

Almost surely, 2^{311221032210012} is an apocalyptic number.

It is an amenable number.

311221032210012 is an abundant number, since it is smaller than the sum of its proper divisors (415668184225188).

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

311221032210012 is a wasteful number, since it uses less digits than its factorization.

311221032210012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5218266 (or 5218264 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 311221032210012 its reverse (210012230122113), we get a palindrome (521233262332125).

The spelling of 311221032210012 in words is "three hundred eleven trillion, two hundred twenty-one billion, thirty-two million, two hundred ten thousand, twelve".