111000111011091 has 32 divisors (see below), whose sum is σ = 164967033241920. Its totient is φ = 73765126904832.

The previous prime is 111000111011087. The next prime is 111000111011147. The reversal of 111000111011091 is 190110111000111.

It is not a de Polignac number, because 111000111011091 - 2² = 111000111011087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111000111011291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25805661 + ... + 29798193.

It is an arithmetic number, because the mean of its divisors is an integer number (5155219788810).

Almost surely, 2^{111000111011091} is an apocalyptic number.

111000111011091 is a deficient number, since it is larger than the sum of its proper divisors (53966922230829).

111000111011091 is a wasteful number, since it uses less digits than its factorization.

111000111011091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3995812 (or 3995806 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 18.

The spelling of 111000111011091 in words is "one hundred eleven trillion, one hundred eleven million, eleven thousand, ninety-one".