100200021200 has 30 divisors (see below), whose sum is σ = 240730551894. Its totient is φ = 40080008320.

The previous prime is 100200021199. The next prime is 100200021277. The reversal of 100200021200 is 2120002001.

It can be written as a sum of positive squares in 3 ways, for example, as 561310864 + 99638710336 = 23692^2 + 315656^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 125249627 + ... + 125250426.

Almost surely, 2^100200021200 is an apocalyptic number.

100200021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100200021200 is an abundant number, since it is smaller than the sum of its proper divisors (140530530694).

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

100200021200 is a wasteful number, since it uses less digits than its factorization.

100200021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250500071 (or 250500060 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 100200021200 its reverse (2120002001), we get a palindrome (102320023201).

The spelling of 100200021200 in words is "one hundred billion, two hundred million, twenty-one thousand, two hundred".