22200001012120 has 128 divisors (see below), whose sum is σ = 52942955486400. Its totient is φ = 8363058995200.

The previous prime is 22200001012087. The next prime is 22200001012121. The reversal of 22200001012120 is 2121010000222.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22200001012120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22200001012121) 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 31 ways as a sum of consecutive naturals, for example, 261870540 + ... + 261955300.

Almost surely, 2^{22200001012120} is an apocalyptic number.

22200001012120 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 22200001012120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26471477743200).

22200001012120 is an abundant number, since it is smaller than the sum of its proper divisors (30742954474280).

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

22200001012120 is a wasteful number, since it uses less digits than its factorization.

22200001012120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90349 (or 90345 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22200001012120 its reverse (2121010000222), we get a palindrome (24321011012342).

The spelling of 22200001012120 in words is "twenty-two trillion, two hundred billion, one million, twelve thousand, one hundred twenty".