113500121 has 6 divisors (see below), whose sum is σ = 132030810. Its totient is φ = 97285776.

The previous prime is 113500081. The next prime is 113500133. The reversal of 113500121 is 121005311.

It can be written as a sum of positive squares in only one way, i.e., 113209600 + 290521 = 10640^2 + 539^2 .

It is not a de Polignac number, because 113500121 - 2²² = 109305817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113500096 and 113500105.

It is not an unprimeable number, because it can be changed into a prime (113500921) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1158116 + ... + 1158213.

It is an arithmetic number, because the mean of its divisors is an integer number (22005135).

Almost surely, 2^113500121 is an apocalyptic number.

It is an amenable number.

113500121 is a deficient number, since it is larger than the sum of its proper divisors (18530689).

113500121 is an equidigital number, since it uses as much as digits as its factorization.

113500121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2316343 (or 2316336 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 113500121 is about 10653.6435551411. The cubic root of 113500121 is about 484.1710017192.

Adding to 113500121 its reverse (121005311), we get a palindrome (234505432).

The spelling of 113500121 in words is "one hundred thirteen million, five hundred thousand, one hundred twenty-one".