2021021100200 has 24 divisors (see below), whose sum is σ = 4698874058430. Its totient is φ = 808408440000.

The previous prime is 2021021100199. The next prime is 2021021100257. The reversal of 2021021100200 is 20011201202.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1784313551524 + 236707548676 = 1335782^2 + 486526^2 .

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, 5052552551 + ... + 5052552950.

Almost surely, 2^{2021021100200} is an apocalyptic number.

2021021100200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021021100200 is an abundant number, since it is smaller than the sum of its proper divisors (2677852958230).

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

2021021100200 is a wasteful number, since it uses less digits than its factorization.

2021021100200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10105105517 (or 10105105508 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2021021100200 its reverse (20011201202), we get a palindrome (2041032301402).

The spelling of 2021021100200 in words is "two trillion, twenty-one billion, twenty-one million, one hundred thousand, two hundred".