221222010120 has 32 divisors (see below), whose sum is σ = 663666030720. Its totient is φ = 58992536000.

The previous prime is 221222010059. The next prime is 221222010193. The reversal of 221222010120 is 21010222122.

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 221222010120.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 921758256 + ... + 921758495.

It is an arithmetic number, because the mean of its divisors is an integer number (20739563460).

Almost surely, 2^221222010120 is an apocalyptic number.

221222010120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221222010120 is an abundant number, since it is smaller than the sum of its proper divisors (442444020600).

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

221222010120 is a wasteful number, since it uses less digits than its factorization.

221222010120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843516765 (or 1843516761 counting only the distinct ones).

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

Adding to 221222010120 its reverse (21010222122), we get a palindrome (242232232242).

The spelling of 221222010120 in words is "two hundred twenty-one billion, two hundred twenty-two million, ten thousand, one hundred twenty".