113121112133 has 4 divisors (see below), whose sum is σ = 113507191308. Its totient is φ = 112735032960.

The previous prime is 113121112127. The next prime is 113121112151. The reversal of 113121112133 is 331211121311.

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

It can be written as a sum of positive squares in 2 ways, for example, as 110687959204 + 2433152929 = 332698^2 + 49327^2 .

It is a cyclic number.

It is not a de Polignac number, because 113121112133 - 2²⁶ = 113054003269 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 (113121112163) 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, 193039148 + ... + 193039733.

It is an arithmetic number, because the mean of its divisors is an integer number (28376797827).

Almost surely, 2^113121112133 is an apocalyptic number.

It is an amenable number.

113121112133 is a deficient number, since it is larger than the sum of its proper divisors (386079175).

113121112133 is an equidigital number, since it uses as much as digits as its factorization.

113121112133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386079174.

The product of its digits is 108, while the sum is 20.

Adding to 113121112133 its reverse (331211121311), we get a palindrome (444332233444).

The spelling of 113121112133 in words is "one hundred thirteen billion, one hundred twenty-one million, one hundred twelve thousand, one hundred thirty-three".