22220112212120 has 128 divisors (see below), whose sum is σ = 50463145152000. Its totient is φ = 8805209088000.

The previous prime is 22220112212119. The next prime is 22220112212189. The reversal of 22220112212120 is 2121221102222.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22220112212092 and 22220112212101.

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 31 ways as a sum of consecutive naturals, for example, 4706651360 + ... + 4706656080.

It is an arithmetic number, because the mean of its divisors is an integer number (394243321500).

Almost surely, 2^{22220112212120} is an apocalyptic number.

22220112212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22220112212120 is an abundant number, since it is smaller than the sum of its proper divisors (28243032939880).

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

22220112212120 is a wasteful number, since it uses less digits than its factorization.

22220112212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6789 (or 6785 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22220112212120 its reverse (2121221102222), we get a palindrome (24341333314342).

The spelling of 22220112212120 in words is "twenty-two trillion, two hundred twenty billion, one hundred twelve million, two hundred twelve thousand, one hundred twenty".