111011011110091 has 4 divisors (see below), whose sum is σ = 111023804827552. Its totient is φ = 110998217392632.

The previous prime is 111011011110049. The next prime is 111011011110113. The reversal of 111011011110091 is 190011110110111.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111011011110091 is a prime.

It is a super-2 number, since 2×111011011110091² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111011011110011) 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, 6396845715 + ... + 6396863068.

It is an arithmetic number, because the mean of its divisors is an integer number (27755951206888).

Almost surely, 2^{111011011110091} is an apocalyptic number.

111011011110091 is a deficient number, since it is larger than the sum of its proper divisors (12793717461).

111011011110091 is an equidigital number, since it uses as much as digits as its factorization.

111011011110091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12793717460.

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

The spelling of 111011011110091 in words is "one hundred eleven trillion, eleven billion, eleven million, one hundred ten thousand, ninety-one".