111002112091 has 4 divisors (see below), whose sum is σ = 119540736112. Its totient is φ = 102463488072.

The previous prime is 111002112043. The next prime is 111002112161. The reversal of 111002112091 is 190211200111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190211200111 = 1723 ⋅110395357.

It is a cyclic number.

It is not a de Polignac number, because 111002112091 - 2⁹ = 111002111579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111002112041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4269311991 + ... + 4269312016.

It is an arithmetic number, because the mean of its divisors is an integer number (29885184028).

Almost surely, 2^111002112091 is an apocalyptic number.

111002112091 is a deficient number, since it is larger than the sum of its proper divisors (8538624021).

111002112091 is an equidigital number, since it uses as much as digits as its factorization.

111002112091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8538624020.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 111002112091 in words is "one hundred eleven billion, two million, one hundred twelve thousand, ninety-one".