210021122200100 has 18 divisors (see below), whose sum is σ = 455745835174434. Its totient is φ = 84008448880000.

The previous prime is 210021122200037. The next prime is 210021122200189. The reversal of 210021122200100 is 1002221120012.

It can be written as a sum of positive squares in 3 ways, for example, as 23468521402624 + 186552600797476 = 4844432^2 + 13658426^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1050105610901 + ... + 1050105611100.

Almost surely, 2^{210021122200100} is an apocalyptic number.

210021122200100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210021122200100 is an abundant number, since it is smaller than the sum of its proper divisors (245724712974334).

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

210021122200100 is a wasteful number, since it uses less digits than its factorization.

210021122200100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100211222015 (or 2100211222008 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 210021122200100 its reverse (1002221120012), we get a palindrome (211023343320112).

The spelling of 210021122200100 in words is "two hundred ten trillion, twenty-one billion, one hundred twenty-two million, two hundred thousand, one hundred".