222121020120 has 64 divisors (see below), whose sum is σ = 705560893920. Its totient is φ = 55748020224.

The previous prime is 222121020073. The next prime is 222121020161. The reversal of 222121020120 is 21020121222.

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 222121020120.

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, 54439387 + ... + 54443466.

Almost surely, 2^222121020120 is an apocalyptic number.

222121020120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222121020120 is an abundant number, since it is smaller than the sum of its proper divisors (483439873800).

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

222121020120 is a wasteful number, since it uses less digits than its factorization.

222121020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108882884 (or 108882880 counting only the distinct ones).

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

Adding to 222121020120 its reverse (21020121222), we get a palindrome (243141141342).

The spelling of 222121020120 in words is "two hundred twenty-two billion, one hundred twenty-one million, twenty thousand, one hundred twenty".