111010111000091 has 2 divisors, whose sum is σ = 111010111000092. Its totient is φ = 111010111000090.

The previous prime is 111010111000049. The next prime is 111010111000169. The reversal of 111010111000091 is 190000111010111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111010111000091 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (111010111020091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505055500045 + 55505055500046.

It is an arithmetic number, because the mean of its divisors is an integer number (55505055500046).

Almost surely, 2^{111010111000091} is an apocalyptic number.

111010111000091 is a deficient number, since it is larger than the sum of its proper divisors (1).

111010111000091 is an equidigital number, since it uses as much as digits as its factorization.

111010111000091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 17.

The spelling of 111010111000091 in words is "one hundred eleven trillion, ten billion, one hundred eleven million, ninety-one", and thus it is an aban number.