22212200020000 has 120 divisors (see below), whose sum is σ = 54781636336812. Its totient is φ = 8862720000000.

The previous prime is 22212200019991. The next prime is 22212200020007. The reversal of 22212200020000 is 2000221222.

It can be written as a sum of positive squares in 10 ways, for example, as 233393339664 + 21978806680336 = 483108^2 + 4688156^2 .

It is not an unprimeable number, because it can be changed into a prime (22212200020007) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 6635200 + ... + 9404800.

Almost surely, 2^{22212200020000} is an apocalyptic number.

22212200020000 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 22212200020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27390818168406).

22212200020000 is an abundant number, since it is smaller than the sum of its proper divisors (32569436316812).

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

22212200020000 is an equidigital number, since it uses as much as digits as its factorization.

22212200020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2770032 (or 2770009 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 22212200020000 its reverse (2000221222), we get a palindrome (22214200241222).

The spelling of 22212200020000 in words is "twenty-two trillion, two hundred twelve billion, two hundred million, twenty thousand".