113221332 has 72 divisors (see below), whose sum is σ = 335951616. Its totient is φ = 31472064.

The previous prime is 113221319. The next prime is 113221349. The reversal of 113221332 is 233122311.

113221332 is a `hidden beast` number, since 11 + 322 + 1 + 332 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3253 + ... + 15395.

Almost surely, 2^113221332 is an apocalyptic number.

113221332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113221332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167975808).

113221332 is an abundant number, since it is smaller than the sum of its proper divisors (222730284).

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

113221332 is a wasteful number, since it uses less digits than its factorization.

113221332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12197 (or 12192 counting only the distinct ones).

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

The square root of 113221332 is about 10640.5513015069. The cubic root of 113221332 is about 483.7742555392.

Adding to 113221332 its reverse (233122311), we get a palindrome (346343643).

It can be divided in two parts, 113 and 221332, that added together give a triangular number (221445 = T₆₆₅).

The spelling of 113221332 in words is "one hundred thirteen million, two hundred twenty-one thousand, three hundred thirty-two".