22221011200 has 54 divisors (see below), whose sum is σ = 55000490594. Its totient is φ = 8888401920.

The previous prime is 22221011173. The next prime is 22221011201. The reversal of 22221011200 is 211012222.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 378535936 + 21842475264 = 19456^2 + 147792^2 .

It is not an unprimeable number, because it can be changed into a prime (22221011201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1729617 + ... + 1742416.

Almost surely, 2^22221011200 is an apocalyptic number.

22221011200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22221011200 is an abundant number, since it is smaller than the sum of its proper divisors (32779479394).

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

22221011200 is an equidigital number, since it uses as much as digits as its factorization.

22221011200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3472059 (or 3472040 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22221011200 its reverse (211012222), we get a palindrome (22432023422).

The spelling of 22221011200 in words is "twenty-two billion, two hundred twenty-one million, eleven thousand, two hundred".