22011312200 has 48 divisors (see below), whose sum is σ = 51274770660. Its totient is φ = 8787584000.

The previous prime is 22011312161. The next prime is 22011312203. The reversal of 22011312200 is 221311022.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 2241264964 + 19770047236 = 47342^2 + 140606^2 .

It is not an unprimeable number, because it can be changed into a prime (22011312203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1421 + ... + 209820.

Almost surely, 2^22011312200 is an apocalyptic number.

22011312200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22011312200 is an abundant number, since it is smaller than the sum of its proper divisors (29263458460).

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

22011312200 is a wasteful number, since it uses less digits than its factorization.

22011312200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211778 (or 211769 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 22011312200 its reverse (221311022), we get a palindrome (22232623222).

The spelling of 22011312200 in words is "twenty-two billion, eleven million, three hundred twelve thousand, two hundred".