222320211312 has 80 divisors (see below), whose sum is σ = 599999811840. Its totient is φ = 70801691136.

The previous prime is 222320211299. The next prime is 222320211317. The reversal of 222320211312 is 213112023222.

It is a super-2 number, since 2×222320211312² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222320211317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 828639 + ... + 1063617.

It is an arithmetic number, because the mean of its divisors is an integer number (7499997648).

Almost surely, 2^222320211312 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 222320211312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299999905920).

222320211312 is an abundant number, since it is smaller than the sum of its proper divisors (377679600528).

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

222320211312 is a wasteful number, since it uses less digits than its factorization.

222320211312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235870 (or 235864 counting only the distinct ones).

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

Adding to 222320211312 its reverse (213112023222), we get a palindrome (435432234534).

The spelling of 222320211312 in words is "two hundred twenty-two billion, three hundred twenty million, two hundred eleven thousand, three hundred twelve".