113203012111 has 12 divisors (see below), whose sum is σ = 136542456912. Its totient is φ = 91924248384.

The previous prime is 113203012099. The next prime is 113203012133. The reversal of 113203012111 is 111210302311.

It is a happy number.

It is not a de Polignac number, because 113203012111 - 2⁷ = 113203011983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113203012151) 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, 22396170 + ... + 22401223.

It is an arithmetic number, because the mean of its divisors is an integer number (11378538076).

Almost surely, 2^113203012111 is an apocalyptic number.

113203012111 is a deficient number, since it is larger than the sum of its proper divisors (23339444801).

113203012111 is an equidigital number, since it uses as much as digits as its factorization.

113203012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44797438 (or 44797419 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 113203012111 its reverse (111210302311), we get a palindrome (224413314422).

The spelling of 113203012111 in words is "one hundred thirteen billion, two hundred three million, twelve thousand, one hundred eleven".