22120000000020 has 192 divisors, whose sum is σ = 75326396302080. Its totient is φ = 5355661939200.

The previous prime is 22119999999997. The next prime is 22120000000037. The reversal of 22120000000020 is 2000000002122.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 25399626 + ... + 26256065.

It is an arithmetic number, because the mean of its divisors is an integer number (392324980740).

Almost surely, 2^{22120000000020} is an apocalyptic number.

22120000000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22120000000020 is an abundant number, since it is smaller than the sum of its proper divisors (53206396302060).

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

22120000000020 is a wasteful number, since it uses less digits than its factorization.

22120000000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51655783 (or 51655775 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 22120000000020 its reverse (2000000002122), we get a palindrome (24120000002142).

The spelling of 22120000000020 in words is "twenty-two trillion, one hundred twenty billion, twenty", and thus it is an aban number.