22120201100 has 72 divisors (see below), whose sum is σ = 52064198928. Its totient is φ = 8124467200.

The previous prime is 22120201099. The next prime is 22120201111. The reversal of 22120201100 is 110202122.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88982 + ... + 228381.

It is an arithmetic number, because the mean of its divisors is an integer number (723113874).

Almost surely, 2^22120201100 is an apocalyptic number.

22120201100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22120201100 is an abundant number, since it is smaller than the sum of its proper divisors (29943997828).

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

22120201100 is a wasteful number, since it uses less digits than its factorization.

22120201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317435 (or 317428 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22120201100 its reverse (110202122), we get a palindrome (22230403222).

The spelling of 22120201100 in words is "twenty-two billion, one hundred twenty million, two hundred one thousand, one hundred".