222222101211200 has 84 divisors (see below), whose sum is σ = 546933843846660. Its totient is φ = 88867937495040.

The previous prime is 222222101211181. The next prime is 222222101211217. The reversal of 222222101211200 is 2112101222222.

It can be written as a sum of positive squares in 6 ways, for example, as 65080232141824 + 157141869069376 = 8067232^2 + 12535624^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9523535 + ... + 23133134.

Almost surely, 2^{222222101211200} is an apocalyptic number.

222222101211200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222222101211200 is an abundant number, since it is smaller than the sum of its proper divisors (324711742635460).

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

222222101211200 is a wasteful number, since it uses less digits than its factorization.

222222101211200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32660944 (or 32660929 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 222222101211200 its reverse (2112101222222), we get a palindrome (224334202433422).

The spelling of 222222101211200 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, one hundred one million, two hundred eleven thousand, two hundred".