22012220000000 has 144 divisors (see below), whose sum is σ = 54922977756192. Its totient is φ = 8804880000000.

The previous prime is 22012219999997. The next prime is 22012220000009. The reversal of 22012220000000 is 2221022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012220000009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19449695 + ... + 20550305.

Almost surely, 2^{22012220000000} is an apocalyptic number.

22012220000000 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 22012220000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27461488878096).

22012220000000 is an abundant number, since it is smaller than the sum of its proper divisors (32910757756192).

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

22012220000000 is an frugal number, since it uses more digits than its factorization.

22012220000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100662 (or 1100618 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 22012220000000 its reverse (2221022), we get a palindrome (22012222221022).

The spelling of 22012220000000 in words is "twenty-two trillion, twelve billion, two hundred twenty million", and thus it is an aban number.