22111122021200 has 30 divisors (see below), whose sum is σ = 53121970656894. Its totient is φ = 8844448808320.

The previous prime is 22111122021199. The next prime is 22111122021203. The reversal of 22111122021200 is 212022111122.

It can be written as a sum of positive squares in 3 ways, for example, as 3744720376384 + 18366401644816 = 1935128^2 + 4285604^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22111122021203) 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 5 ways as a sum of consecutive naturals, for example, 27638902127 + ... + 27638902926.

Almost surely, 2^{22111122021200} is an apocalyptic number.

22111122021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22111122021200 is an abundant number, since it is smaller than the sum of its proper divisors (31010848635694).

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

22111122021200 is a wasteful number, since it uses less digits than its factorization.

22111122021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55277805071 (or 55277805060 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22111122021200 its reverse (212022111122), we get a palindrome (22323144132322).

The spelling of 22111122021200 in words is "twenty-two trillion, one hundred eleven billion, one hundred twenty-two million, twenty-one thousand, two hundred".