210002100200 has 48 divisors (see below), whose sum is σ = 489214363500. Its totient is φ = 83835768320.

The previous prime is 210002100179. The next prime is 210002100247. The reversal of 210002100200 is 2001200012.

It can be written as a sum of positive squares in 6 ways, for example, as 115859905924 + 94142194276 = 340382^2 + 306826^2 .

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

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, 929645 + ... + 1133244.

Almost surely, 2^210002100200 is an apocalyptic number.

210002100200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210002100200 is an abundant number, since it is smaller than the sum of its proper divisors (279212263300).

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

210002100200 is a wasteful number, since it uses less digits than its factorization.

210002100200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2063414 (or 2063405 counting only the distinct ones).

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

Adding to 210002100200 its reverse (2001200012), we get a palindrome (212003300212).

The spelling of 210002100200 in words is "two hundred ten billion, two million, one hundred thousand, two hundred".