111661250565233 has 2 divisors, whose sum is σ = 111661250565234. Its totient is φ = 111661250565232.

The previous prime is 111661250565229. The next prime is 111661250565259. The reversal of 111661250565233 is 332565052166111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101686410625024 + 9974839940209 = 10083968^2 + 3158297^2 .

It is a cyclic number.

It is not a de Polignac number, because 111661250565233 - 2² = 111661250565229 is a prime.

It is not a weakly prime, because it can be changed into another prime (111661250565223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55830625282616 + 55830625282617.

It is an arithmetic number, because the mean of its divisors is an integer number (55830625282617).

Almost surely, 2^{111661250565233} is an apocalyptic number.

It is an amenable number.

111661250565233 is a deficient number, since it is larger than the sum of its proper divisors (1).

111661250565233 is an equidigital number, since it uses as much as digits as its factorization.

111661250565233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 111661250565233 in words is "one hundred eleven trillion, six hundred sixty-one billion, two hundred fifty million, five hundred sixty-five thousand, two hundred thirty-three".