22120212000000 has 504 divisors, whose sum is σ = 74321763044256. Its totient is φ = 5840000000000.

The previous prime is 22120211999999. The next prime is 22120212000031. The reversal of 22120212000000 is 21202122.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 22120212000000.

It is a congruent number.

It is an unprimeable number.

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 55 ways as a sum of consecutive naturals, for example, 1211990875 + ... + 1212009125.

It is an arithmetic number, because the mean of its divisors is an integer number (147463815564).

Almost surely, 2^{22120212000000} is an apocalyptic number.

22120212000000 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 22120212000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37160881522128).

22120212000000 is an abundant number, since it is smaller than the sum of its proper divisors (52201551044256).

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

22120212000000 is an frugal number, since it uses more digits than its factorization.

22120212000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18401 (or 18362 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22120212000000 its reverse (21202122), we get a palindrome (22120233202122).

The spelling of 22120212000000 in words is "twenty-two trillion, one hundred twenty billion, two hundred twelve million", and thus it is an aban number.