22122012222200 has 192 divisors, whose sum is σ = 59803483403520. Its totient is φ = 7521027840000.

The previous prime is 22122012222199. The next prime is 22122012222203. The reversal of 22122012222200 is 222221022122.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122012222203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3688799 + ... + 7606001.

It is an arithmetic number, because the mean of its divisors is an integer number (311476476060).

Almost surely, 2^{22122012222200} is an apocalyptic number.

22122012222200 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 22122012222200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29901741701760).

22122012222200 is an abundant number, since it is smaller than the sum of its proper divisors (37681471181320).

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

22122012222200 is a wasteful number, since it uses less digits than its factorization.

22122012222200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3917398 (or 3917389 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22122012222200 its reverse (222221022122), we get a palindrome (22344233244322).

The spelling of 22122012222200 in words is "twenty-two trillion, one hundred twenty-two billion, twelve million, two hundred twenty-two thousand, two hundred".