3121320022012 has 24 divisors (see below), whose sum is σ = 5570579044800. Its totient is φ = 1529781105216.

The previous prime is 3121320021991. The next prime is 3121320022027. The reversal of 3121320022012 is 2102200231213.

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, 6659812 + ... + 7113067.

It is an arithmetic number, because the mean of its divisors is an integer number (232107460200).

Almost surely, 2^{3121320022012} is an apocalyptic number.

It is an amenable number.

3121320022012 is a deficient number, since it is larger than the sum of its proper divisors (2449259022788).

3121320022012 is a wasteful number, since it uses less digits than its factorization.

3121320022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13774005 (or 13774003 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 3121320022012 its reverse (2102200231213), we get a palindrome (5223520253225).

The spelling of 3121320022012 in words is "three trillion, one hundred twenty-one billion, three hundred twenty million, twenty-two thousand, twelve".