312122222232 has 128 divisors (see below), whose sum is σ = 811192536000. Its totient is φ = 99995904000.

The previous prime is 312122222179. The next prime is 312122222267. The reversal of 312122222232 is 232222221213.

It is a super-2 number, since 2×312122222232² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 31 ways as a sum of consecutive naturals, for example, 41342394 + ... + 41349942.

Almost surely, 2^312122222232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312122222232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (405596268000).

312122222232 is an abundant number, since it is smaller than the sum of its proper divisors (499070313768).

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

312122222232 is a wasteful number, since it uses less digits than its factorization.

312122222232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8157 (or 8153 counting only the distinct ones).

The product of its digits is 2304, while the sum is 24.

Adding to 312122222232 its reverse (232222221213), we get a palindrome (544344443445).

The spelling of 312122222232 in words is "three hundred twelve billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred thirty-two".