222321031320 has 128 divisors (see below), whose sum is σ = 684438854400. Its totient is φ = 57748314624.

The previous prime is 222321031259. The next prime is 222321031333. The reversal of 222321031320 is 23130123222.

It is a happy number.

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, 758299 + ... + 1009781.

It is an arithmetic number, because the mean of its divisors is an integer number (5347178550).

Almost surely, 2^222321031320 is an apocalyptic number.

222321031320 is a gapful number since it is divisible by the number (20) 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 222321031320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342219427200).

222321031320 is an abundant number, since it is smaller than the sum of its proper divisors (462117823080).

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

222321031320 is a wasteful number, since it uses less digits than its factorization.

222321031320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251689 (or 251685 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 222321031320 its reverse (23130123222), we get a palindrome (245451154542).

The spelling of 222321031320 in words is "two hundred twenty-two billion, three hundred twenty-one million, thirty-one thousand, three hundred twenty".