111110100111091 has 4 divisors (see below), whose sum is σ = 113694055927672. Its totient is φ = 108526144294512.

The previous prime is 111110100111037. The next prime is 111110100111119. The reversal of 111110100111091 is 190111001011111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111110100111091 - 2¹⁵ = 111110100078323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111110100111001) 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, 1291977908226 + ... + 1291977908311.

It is an arithmetic number, because the mean of its divisors is an integer number (28423513981918).

Almost surely, 2^{111110100111091} is an apocalyptic number.

111110100111091 is a deficient number, since it is larger than the sum of its proper divisors (2583955816581).

111110100111091 is an equidigital number, since it uses as much as digits as its factorization.

111110100111091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2583955816580.

The product of its (nonzero) digits is 9, while the sum is 19.

The spelling of 111110100111091 in words is "one hundred eleven trillion, one hundred ten billion, one hundred million, one hundred eleven thousand, ninety-one".