112120021961 has 2 divisors, whose sum is σ = 112120021962. Its totient is φ = 112120021960.

The previous prime is 112120021939. The next prime is 112120022017. The reversal of 112120021961 is 169120021211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101604750025 + 10515271936 = 318755^2 + 102544^2 .

It is a cyclic number.

It is not a de Polignac number, because 112120021961 - 2²⁶ = 112052913097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 112120021961.

It is not a weakly prime, because it can be changed into another prime (112120021661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56060010980 + 56060010981.

It is an arithmetic number, because the mean of its divisors is an integer number (56060010981).

Almost surely, 2^112120021961 is an apocalyptic number.

It is an amenable number.

112120021961 is a deficient number, since it is larger than the sum of its proper divisors (1).

112120021961 is an equidigital number, since it uses as much as digits as its factorization.

112120021961 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 112120021961 in words is "one hundred twelve billion, one hundred twenty million, twenty-one thousand, nine hundred sixty-one".