113435216121 has 4 divisors (see below), whose sum is σ = 151246954832. Its totient is φ = 75623477412.

The previous prime is 113435216119. The next prime is 113435216129. The reversal of 113435216121 is 121612534311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 113435216121 - 2¹ = 113435216119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113435216129) 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, 18905869351 + ... + 18905869356.

It is an arithmetic number, because the mean of its divisors is an integer number (37811738708).

Almost surely, 2^113435216121 is an apocalyptic number.

It is an amenable number.

113435216121 is a deficient number, since it is larger than the sum of its proper divisors (37811738711).

113435216121 is an equidigital number, since it uses as much as digits as its factorization.

113435216121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37811738710.

The product of its digits is 4320, while the sum is 30.

The spelling of 113435216121 in words is "one hundred thirteen billion, four hundred thirty-five million, two hundred sixteen thousand, one hundred twenty-one".