113221513 has 16 divisors (see below), whose sum is σ = 126671040. Its totient is φ = 100848960.

The previous prime is 113221487. The next prime is 113221519. The reversal of 113221513 is 315122311.

It is not a de Polignac number, because 113221513 - 2⁹ = 113221001 is a prime.

It is a super-2 number, since 2×113221513² = 25638222012018338, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113221519) 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, 116118 + ... + 117088.

It is an arithmetic number, because the mean of its divisors is an integer number (7916940).

Almost surely, 2^113221513 is an apocalyptic number.

It is an amenable number.

113221513 is a deficient number, since it is larger than the sum of its proper divisors (13449527).

113221513 is an frugal number, since it uses more digits than its factorization.

113221513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045 (or 1007 counting only the distinct ones).

The product of its digits is 180, while the sum is 19.

The square root of 113221513 is about 10640.5598067019. The cubic root of 113221513 is about 483.7745133325.

Adding to 113221513 its reverse (315122311), we get a palindrome (428343824).

The spelling of 113221513 in words is "one hundred thirteen million, two hundred twenty-one thousand, five hundred thirteen".