121120402031 has 16 divisors (see below), whose sum is σ = 122737864704. Its totient is φ = 119514455424.

The previous prime is 121120402003. The next prime is 121120402037. The reversal of 121120402031 is 130204021121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121120402031 is a prime.

It is a super-2 number, since 2×121120402031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121120402037) 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, 42751991 + ... + 42754823.

It is an arithmetic number, because the mean of its divisors is an integer number (7671116544).

Almost surely, 2^121120402031 is an apocalyptic number.

121120402031 is a deficient number, since it is larger than the sum of its proper divisors (1617462673).

121120402031 is a wasteful number, since it uses less digits than its factorization.

121120402031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4670.

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

Adding to 121120402031 its reverse (130204021121), we get a palindrome (251324423152).

The spelling of 121120402031 in words is "one hundred twenty-one billion, one hundred twenty million, four hundred two thousand, thirty-one".