121031021313 has 16 divisors (see below), whose sum is σ = 180206256000. Its totient is φ = 80281879920.

The previous prime is 121031021261. The next prime is 121031021327. The reversal of 121031021313 is 313120130121.

121031021313 is a `hidden beast` number, since 1 + 21 + 0 + 310 + 21 + 313 = 666.

It is not a de Polignac number, because 121031021313 - 2⁹ = 121031020801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121131021313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11257518 + ... + 11268263.

It is an arithmetic number, because the mean of its divisors is an integer number (11262891000).

Almost surely, 2^121031021313 is an apocalyptic number.

It is an amenable number.

121031021313 is a deficient number, since it is larger than the sum of its proper divisors (59175234687).

121031021313 is a wasteful number, since it uses less digits than its factorization.

121031021313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22525989 (or 22525983 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 121031021313 its reverse (313120130121), we get a palindrome (434151151434).

The spelling of 121031021313 in words is "one hundred twenty-one billion, thirty-one million, twenty-one thousand, three hundred thirteen".