222132312 has 48 divisors (see below), whose sum is σ = 617875440. Its totient is φ = 72042048.

The previous prime is 222132311. The next prime is 222132419. The reversal of 222132312 is 213231222.

222132312 is a `hidden beast` number, since 222 + 132 + 312 = 666.

222132312 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 not an unprimeable number, because it can be changed into a prime (222132311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39028 + ... + 44355.

It is an arithmetic number, because the mean of its divisors is an integer number (12872405).

Almost surely, 2^222132312 is an apocalyptic number.

It is an amenable number.

222132312 is an abundant number, since it is smaller than the sum of its proper divisors (395743128).

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

222132312 is a wasteful number, since it uses less digits than its factorization.

222132312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83432 (or 83425 counting only the distinct ones).

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

The square root of 222132312 is about 14904.1038643724. The cubic root of 222132312 is about 605.6251643998.

Adding to 222132312 its reverse (213231222), we get a palindrome (435363534).

The spelling of 222132312 in words is "two hundred twenty-two million, one hundred thirty-two thousand, three hundred twelve".