221243220222120 has 256 divisors, whose sum is σ = 779042156659200. Its totient is φ = 56433052760832.

The previous prime is 221243220222119. The next prime is 221243220222163. The reversal of 221243220222120 is 21222022342122.

221243220222120 is a `hidden beast` number, since 2 + 2 + 1 + 2 + 432 + 2 + 0 + 2 + 221 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 52967787 + ... + 56991866.

It is an arithmetic number, because the mean of its divisors is an integer number (3043133424450).

Almost surely, 2^{221243220222120} is an apocalyptic number.

221243220222120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221243220222120 is an abundant number, since it is smaller than the sum of its proper divisors (557798936437080).

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

221243220222120 is a wasteful number, since it uses less digits than its factorization.

221243220222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109959708 (or 109959686 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 221243220222120 its reverse (21222022342122), we get a palindrome (242465242564242).

The spelling of 221243220222120 in words is "two hundred twenty-one trillion, two hundred forty-three billion, two hundred twenty million, two hundred twenty-two thousand, one hundred twenty".