222222221200 has 120 divisors (see below), whose sum is σ = 610305545088. Its totient is φ = 76172144640.

The previous prime is 222222221191. The next prime is 222222221203. The reversal of 222222221200 is 2122222222.

It is not an unprimeable number, because it can be changed into a prime (222222221203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17109909 + ... + 17122891.

Almost surely, 2^222222221200 is an apocalyptic number.

222222221200 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 222222221200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305152772544).

222222221200 is an abundant number, since it is smaller than the sum of its proper divisors (388083323888).

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

222222221200 is a wasteful number, since it uses less digits than its factorization.

222222221200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19121 (or 19110 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 222222221200 its reverse (2122222222), we get a palindrome (224344443422).

It can be divided in two parts, 2222222 and 21200, that added together give a palindrome (2243422).

The spelling of 222222221200 in words is "two hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred".