111011111011091 has 8 divisors (see below), whose sum is σ = 111029206423584. Its totient is φ = 110993016176640.

The previous prime is 111011111010977. The next prime is 111011111011109. The reversal of 111011111011091 is 190110111110111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111011111011091 - 2¹⁸ = 111011110748947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111011111011891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548706245 + ... + 548908521.

It is an arithmetic number, because the mean of its divisors is an integer number (13878650802948).

Almost surely, 2^{111011111011091} is an apocalyptic number.

111011111011091 is a deficient number, since it is larger than the sum of its proper divisors (18095412493).

111011111011091 is an equidigital number, since it uses as much as digits as its factorization.

111011111011091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289021.

The product of its (nonzero) digits is 9, while the sum is 20.

The spelling of 111011111011091 in words is "one hundred eleven trillion, eleven billion, one hundred eleven million, eleven thousand, ninety-one".