111112320091 has 2 divisors, whose sum is σ = 111112320092. Its totient is φ = 111112320090.

The previous prime is 111112320041. The next prime is 111112320101. The reversal of 111112320091 is 190023211111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111112320091 - 2²⁷ = 110978102363 is a prime.

It is not a weakly prime, because it can be changed into another prime (111112320041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55556160045 + 55556160046.

It is an arithmetic number, because the mean of its divisors is an integer number (55556160046).

Almost surely, 2^111112320091 is an apocalyptic number.

111112320091 is a deficient number, since it is larger than the sum of its proper divisors (1).

111112320091 is an equidigital number, since it uses as much as digits as its factorization.

111112320091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 22.

The spelling of 111112320091 in words is "one hundred eleven billion, one hundred twelve million, three hundred twenty thousand, ninety-one".