222221100120 has 64 divisors (see below), whose sum is σ = 666926784000. Its totient is φ = 59235539328.

The previous prime is 222221100097. The next prime is 222221100131. The reversal of 222221100120 is 21001122222.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 222221100120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60000 + ... + 669359.

It is an arithmetic number, because the mean of its divisors is an integer number (10420731000).

Almost surely, 2^222221100120 is an apocalyptic number.

222221100120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222221100120 is an abundant number, since it is smaller than the sum of its proper divisors (444705683880).

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

222221100120 is a wasteful number, since it uses less digits than its factorization.

222221100120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731912 (or 731908 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 222221100120 its reverse (21001122222), we get a palindrome (243222222342).

The spelling of 222221100120 in words is "two hundred twenty-two billion, two hundred twenty-one million, one hundred thousand, one hundred twenty".