22201012100 has 36 divisors (see below), whose sum is σ = 49351234548. Its totient is φ = 8663808000.

The previous prime is 22201012091. The next prime is 22201012123. The reversal of 22201012100 is 121010222.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 9360949504 + 12840062596 = 96752^2 + 113314^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2703341 + ... + 2711540.

Almost surely, 2^22201012100 is an apocalyptic number.

22201012100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22201012100 is an abundant number, since it is smaller than the sum of its proper divisors (27150222448).

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

22201012100 is a wasteful number, since it uses less digits than its factorization.

22201012100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5414936 (or 5414929 counting only the distinct ones).

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

Adding to 22201012100 its reverse (121010222), we get a palindrome (22322022322).

The spelling of 22201012100 in words is "twenty-two billion, two hundred one million, twelve thousand, one hundred".