112121221931 has 2 divisors, whose sum is σ = 112121221932. Its totient is φ = 112121221930.

The previous prime is 112121221889. The next prime is 112121221937. The reversal of 112121221931 is 139122121211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 112121221931 - 2³⁴ = 94941352747 is a prime.

It is a super-2 number, since 2×112121221931² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 112121221931.

It is not a weakly prime, because it can be changed into another prime (112121221937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56060610965 + 56060610966.

It is an arithmetic number, because the mean of its divisors is an integer number (56060610966).

Almost surely, 2^112121221931 is an apocalyptic number.

112121221931 is a deficient number, since it is larger than the sum of its proper divisors (1).

112121221931 is an equidigital number, since it uses as much as digits as its factorization.

112121221931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 26.

The spelling of 112121221931 in words is "one hundred twelve billion, one hundred twenty-one million, two hundred twenty-one thousand, nine hundred thirty-one".