113121120213 has 16 divisors (see below), whose sum is σ = 167597443200. Its totient is φ = 75409310880.

The previous prime is 113121120199. The next prime is 113121120221. The reversal of 113121120213 is 312021121311.

It is not a de Polignac number, because 113121120213 - 2⁵ = 113121120181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113121120253) 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, 331968 + ... + 580038.

It is an arithmetic number, because the mean of its divisors is an integer number (10474840200).

Almost surely, 2^113121120213 is an apocalyptic number.

It is an amenable number.

113121120213 is a deficient number, since it is larger than the sum of its proper divisors (54476322987).

113121120213 is a wasteful number, since it uses less digits than its factorization.

113121120213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264969 (or 264963 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 113121120213 its reverse (312021121311), we get a palindrome (425142241524).

The spelling of 113121120213 in words is "one hundred thirteen billion, one hundred twenty-one million, one hundred twenty thousand, two hundred thirteen".