113233221 has 20 divisors (see below), whose sum is σ = 170837964. Its totient is φ = 74736000.

The previous prime is 113233193. The next prime is 113233229. The reversal of 113233221 is 122332311.

It can be written as a sum of positive squares in 2 ways, for example, as 78588225 + 34644996 = 8865^2 + 5886^2 .

It is not a de Polignac number, because 113233221 - 2⁶ = 113233157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113233194 and 113233203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113233229) 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 19 ways as a sum of consecutive naturals, for example, 1261 + ... + 15101.

Almost surely, 2^113233221 is an apocalyptic number.

It is an amenable number.

113233221 is a deficient number, since it is larger than the sum of its proper divisors (57604743).

113233221 is a wasteful number, since it uses less digits than its factorization.

113233221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13954 (or 13945 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 113233221 is about 10641.1099515041. The cubic root of 113233221 is about 483.7911881281.

Adding to 113233221 its reverse (122332311), we get a palindrome (235565532).

The spelling of 113233221 in words is "one hundred thirteen million, two hundred thirty-three thousand, two hundred twenty-one".