111110101011091 has 12 divisors (see below), whose sum is σ = 139192873794912. Its totient is φ = 87911288711568.

The previous prime is 111110101011083. The next prime is 111110101011109. The reversal of 111110101011091 is 190110101011111.

It is a happy number.

It is not a de Polignac number, because 111110101011091 - 2³ = 111110101011083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111110101011031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87213579435 + ... + 87213580708.

It is an arithmetic number, because the mean of its divisors is an integer number (11599406149576).

Almost surely, 2^{111110101011091} is an apocalyptic number.

111110101011091 is a deficient number, since it is larger than the sum of its proper divisors (28082772783821).

111110101011091 is a wasteful number, since it uses less digits than its factorization.

111110101011091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174427160170 (or 174427160163 counting only the distinct ones).

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

The spelling of 111110101011091 in words is "one hundred eleven trillion, one hundred ten billion, one hundred one million, eleven thousand, ninety-one".