200021100001200 has 180 divisors, whose sum is σ = 710271308701240. Its totient is φ = 52098519029760.

The previous prime is 200021100001193. The next prime is 200021100001211. The reversal of 200021100001200 is 2100001120002.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 645908185 + ... + 646217784.

Almost surely, 2^{200021100001200} is an apocalyptic number.

200021100001200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200021100001200 is an abundant number, since it is smaller than the sum of its proper divisors (510250208700040).

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

200021100001200 is a wasteful number, since it uses less digits than its factorization.

200021100001200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292126036 (or 1292126022 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 200021100001200 its reverse (2100001120002), we get a palindrome (202121101121202).

The spelling of 200021100001200 in words is "two hundred trillion, twenty-one billion, one hundred million, one thousand, two hundred".