22221021022120 has 32 divisors (see below), whose sum is σ = 50017129854120. Its totient is φ = 8884882621440.

The previous prime is 22221021022117. The next prime is 22221021022139. The reversal of 22221021022120 is 2122012012222.

It can be written as a sum of positive squares in 4 ways, for example, as 5649168732804 + 16571852289316 = 2376798^2 + 4070854^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110078757 + ... + 110280436.

Almost surely, 2^{22221021022120} is an apocalyptic number.

22221021022120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22221021022120 is an abundant number, since it is smaller than the sum of its proper divisors (27796108832000).

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

22221021022120 is a wasteful number, since it uses less digits than its factorization.

22221021022120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220361725 (or 220361721 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22221021022120 its reverse (2122012012222), we get a palindrome (24343033034342).

The spelling of 22221021022120 in words is "twenty-two trillion, two hundred twenty-one billion, twenty-one million, twenty-two thousand, one hundred twenty".