22212220120000 has 140 divisors (see below), whose sum is σ = 55646922284800. Its totient is φ = 8793289728000.

The previous prime is 22212220119977. The next prime is 22212220120007. The reversal of 22212220120000 is 2102221222.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212220120007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1017601 + ... + 6742399.

It is an arithmetic number, because the mean of its divisors is an integer number (397478016320).

Almost surely, 2^{22212220120000} is an apocalyptic number.

22212220120000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22212220120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27823461142400).

22212220120000 is an abundant number, since it is smaller than the sum of its proper divisors (33434702164800).

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

22212220120000 is an frugal number, since it uses more digits than its factorization.

22212220120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5724928 (or 5724903 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22212220120000 its reverse (2102221222), we get a palindrome (22214322341222).

The spelling of 22212220120000 in words is "twenty-two trillion, two hundred twelve billion, two hundred twenty million, one hundred twenty thousand".