31020011120121 has 32 divisors (see below), whose sum is σ = 42460288700928. Its totient is φ = 20137490058240.

The previous prime is 31020011120101. The next prime is 31020011120233. The reversal of 31020011120121 is 12102111002013.

It is not a de Polignac number, because 31020011120121 - 2⁵ = 31020011120089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31020011120121.

It is not an unprimeable number, because it can be changed into a prime (31020011120101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7515381 + ... + 10886733.

It is an arithmetic number, because the mean of its divisors is an integer number (1326884021904).

Almost surely, 2^{31020011120121} is an apocalyptic number.

It is an amenable number.

31020011120121 is a deficient number, since it is larger than the sum of its proper divisors (11440277580807).

31020011120121 is a wasteful number, since it uses less digits than its factorization.

31020011120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3371921.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 31020011120121 its reverse (12102111002013), we get a palindrome (43122122122134).

The spelling of 31020011120121 in words is "thirty-one trillion, twenty billion, eleven million, one hundred twenty thousand, one hundred twenty-one".