210001020200 has 48 divisors (see below), whose sum is σ = 497464705980. Its totient is φ = 82415490560.

The previous prime is 210001020193. The next prime is 210001020227. The reversal of 210001020200 is 2020100012.

It can be written as a sum of positive squares in 6 ways, for example, as 174912987076 + 35088033124 = 418226^2 + 187318^2 .

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, 9895109 + ... + 9916308.

Almost surely, 2^210001020200 is an apocalyptic number.

210001020200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210001020200 is an abundant number, since it is smaller than the sum of its proper divisors (287463685780).

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

210001020200 is a wasteful number, since it uses less digits than its factorization.

210001020200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19811486 (or 19811477 counting only the distinct ones).

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

Adding to 210001020200 its reverse (2020100012), we get a palindrome (212021120212).

The spelling of 210001020200 in words is "two hundred ten billion, one million, twenty thousand, two hundred".