113221444 has 12 divisors (see below), whose sum is σ = 226442944. Its totient is φ = 48523464.

The previous prime is 113221441. The next prime is 113221447. The reversal of 113221444 is 444122311.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (113221441) and next prime (113221447).

113221444 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (113221441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2021784 + ... + 2021839.

Almost surely, 2^113221444 is an apocalyptic number.

113221444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

113221444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

113221444 is a wasteful number, since it uses less digits than its factorization.

113221444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4043634 (or 4043632 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 113221444 is about 10640.5565643908. The cubic root of 113221444 is about 483.7744150577.

Adding to 113221444 its reverse (444122311), we get a palindrome (557343755).

The spelling of 113221444 in words is "one hundred thirteen million, two hundred twenty-one thousand, four hundred forty-four".