222321132 has 48 divisors (see below), whose sum is σ = 628790400. Its totient is φ = 67369680.

The previous prime is 222321107. The next prime is 222321133. The reversal of 222321132 is 231123222.

It is a super-2 number, since 2×222321132² = 98853371467522848, which contains 22 as substring.

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 not an unprimeable number, because it can be changed into a prime (222321133) 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 15 ways as a sum of consecutive naturals, for example, 92382 + ... + 94757.

It is an arithmetic number, because the mean of its divisors is an integer number (13099800).

Almost surely, 2^222321132 is an apocalyptic number.

222321132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

222321132 is an abundant number, since it is smaller than the sum of its proper divisors (406469268).

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

222321132 is a wasteful number, since it uses less digits than its factorization.

222321132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187163 (or 187155 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 222321132 is about 14910.4370157283. The cubic root of 222321132 is about 605.7967164448.

Adding to 222321132 its reverse (231123222), we get a palindrome (453444354).

The spelling of 222321132 in words is "two hundred twenty-two million, three hundred twenty-one thousand, one hundred thirty-two".