222231311220 has 24 divisors (see below), whose sum is σ = 622247671584. Its totient is φ = 59261682976.

The previous prime is 222231311179. The next prime is 222231311243. The reversal of 222231311220 is 22113132222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1851927534 + ... + 1851927653.

It is an arithmetic number, because the mean of its divisors is an integer number (25926986316).

Almost surely, 2^222231311220 is an apocalyptic number.

222231311220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222231311220 is an abundant number, since it is smaller than the sum of its proper divisors (400016360364).

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

222231311220 is a wasteful number, since it uses less digits than its factorization.

222231311220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3703855199 (or 3703855197 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 222231311220 its reverse (22113132222), we get a palindrome (244344443442).

The spelling of 222231311220 in words is "two hundred twenty-two billion, two hundred thirty-one million, three hundred eleven thousand, two hundred twenty".