222121221180 has 48 divisors (see below), whose sum is σ = 621960307584. Its totient is φ = 59230336320.

The previous prime is 222121221097. The next prime is 222121221181. The reversal of 222121221180 is 81122121222.

It is a self number, because there is not a number n which added to its sum of digits gives 222121221180.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222121221181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2927199 + ... + 3002121.

It is an arithmetic number, because the mean of its divisors is an integer number (12957506408).

Almost surely, 2^222121221180 is an apocalyptic number.

222121221180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222121221180 is an abundant number, since it is smaller than the sum of its proper divisors (399839086404).

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

222121221180 is a wasteful number, since it uses less digits than its factorization.

222121221180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124346 (or 124344 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The spelling of 222121221180 in words is "two hundred twenty-two billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred eighty".