323212312220 has 96 divisors (see below), whose sum is σ = 802795069440. Its totient is φ = 106964709120.

The previous prime is 323212312219. The next prime is 323212312261. The reversal of 323212312220 is 22213212323.

It is a super-2 number, since 2×323212312220² (a number of 24 digits) contains 22 as substring.

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, 1592537 + ... + 1783983.

It is an arithmetic number, because the mean of its divisors is an integer number (8362448640).

Almost surely, 2^323212312220 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 323212312220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (401397534720).

323212312220 is an abundant number, since it is smaller than the sum of its proper divisors (479582757220).

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

323212312220 is a wasteful number, since it uses less digits than its factorization.

323212312220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191883 (or 191881 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 323212312220 its reverse (22213212323), we get a palindrome (345425524543).

The spelling of 323212312220 in words is "three hundred twenty-three billion, two hundred twelve million, three hundred twelve thousand, two hundred twenty".