222221002100120 has 64 divisors (see below), whose sum is σ = 507063798709920. Its totient is φ = 87633170279424.

The previous prime is 222221002100101. The next prime is 222221002100129. The reversal of 222221002100120 is 21001200122222.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222221002100129) 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, 9497774 + ... + 23122493.

Almost surely, 2^{222221002100120} is an apocalyptic number.

222221002100120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222221002100120 is an abundant number, since it is smaller than the sum of its proper divisors (284842796609800).

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

222221002100120 is a wasteful number, since it uses less digits than its factorization.

222221002100120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32622684 (or 32622680 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222221002100120 its reverse (21001200122222), we get a palindrome (243222202222342).

The spelling of 222221002100120 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, two million, one hundred thousand, one hundred twenty".