113515221 has 8 divisors (see below), whose sum is σ = 151406464. Its totient is φ = 75650400.

The previous prime is 113515187. The next prime is 113515231. The reversal of 113515221 is 122515311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 113515221 - 2²² = 109320917 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 (113515231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8100 + ... + 17106.

It is an arithmetic number, because the mean of its divisors is an integer number (18925808).

Almost surely, 2^113515221 is an apocalyptic number.

It is an amenable number.

113515221 is a deficient number, since it is larger than the sum of its proper divisors (37891243).

113515221 is an equidigital number, since it uses as much as digits as its factorization.

113515221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13211.

The product of its digits is 300, while the sum is 21.

The square root of 113515221 is about 10654.3522093086. The cubic root of 113515221 is about 484.1924720574.

The spelling of 113515221 in words is "one hundred thirteen million, five hundred fifteen thousand, two hundred twenty-one".