113111210219991 has 16 divisors (see below), whose sum is σ = 157572083215104. Its totient is φ = 72037237212864.

The previous prime is 113111210219923. The next prime is 113111210220031. The reversal of 113111210219991 is 199912012111311.

It is not a de Polignac number, because 113111210219991 - 2¹⁵ = 113111210187223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113111210229991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1041427846 + ... + 1041536451.

It is an arithmetic number, because the mean of its divisors is an integer number (9848255200944).

Almost surely, 2^{113111210219991} is an apocalyptic number.

113111210219991 is a deficient number, since it is larger than the sum of its proper divisors (44460872995113).

113111210219991 is a wasteful number, since it uses less digits than its factorization.

113111210219991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082965110.

The product of its (nonzero) digits is 8748, while the sum is 42.

The spelling of 113111210219991 in words is "one hundred thirteen trillion, one hundred eleven billion, two hundred ten million, two hundred nineteen thousand, nine hundred ninety-one".