113589221 has 4 divisors (see below), whose sum is σ = 113611212. Its totient is φ = 113567232.

The previous prime is 113589209. The next prime is 113589247. The reversal of 113589221 is 122985311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122985311 = 137 ⋅897703.

It can be written as a sum of positive squares in 2 ways, for example, as 11356900 + 102232321 = 3370^2 + 10111^2 .

It is a cyclic number.

It is not a de Polignac number, because 113589221 - 2¹⁰ = 113588197 is a prime.

It is a super-2 number, since 2×113589221² = 25805022254773682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113589251) 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, 1445 + ... + 15141.

It is an arithmetic number, because the mean of its divisors is an integer number (28402803).

Almost surely, 2^113589221 is an apocalyptic number.

It is an amenable number.

113589221 is a deficient number, since it is larger than the sum of its proper divisors (21991).

113589221 is an equidigital number, since it uses as much as digits as its factorization.

113589221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21990.

The product of its digits is 4320, while the sum is 32.

The square root of 113589221 is about 10657.8244027569. The cubic root of 113589221 is about 484.2976634129.

The spelling of 113589221 in words is "one hundred thirteen million, five hundred eighty-nine thousand, two hundred twenty-one".