121292031631 has 2 divisors, whose sum is σ = 121292031632. Its totient is φ = 121292031630.

The previous prime is 121292031599. The next prime is 121292031659. The reversal of 121292031631 is 136130292121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121292031631 - 2⁵ = 121292031599 is a prime.

It is a super-2 number, since 2×121292031631² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121292031593 and 121292031602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121292031031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60646015815 + 60646015816.

It is an arithmetic number, because the mean of its divisors is an integer number (60646015816).

Almost surely, 2^121292031631 is an apocalyptic number.

121292031631 is a deficient number, since it is larger than the sum of its proper divisors (1).

121292031631 is an equidigital number, since it uses as much as digits as its factorization.

121292031631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The spelling of 121292031631 in words is "one hundred twenty-one billion, two hundred ninety-two million, thirty-one thousand, six hundred thirty-one".