200100021009 has 16 divisors (see below), whose sum is σ = 305042995200. Its totient is φ = 114294615120.

The previous prime is 200100020977. The next prime is 200100021013. The reversal of 200100021009 is 900120001002.

It is a happy number.

It is not a de Polignac number, because 200100021009 - 2⁵ = 200100020977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (200100021089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1959609 + ... + 2059190.

It is an arithmetic number, because the mean of its divisors is an integer number (19065187200).

Almost surely, 2^200100021009 is an apocalyptic number.

It is an amenable number.

200100021009 is a deficient number, since it is larger than the sum of its proper divisors (104942974191).

200100021009 is a wasteful number, since it uses less digits than its factorization.

200100021009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4021180.

The product of its (nonzero) digits is 36, while the sum is 15.

The spelling of 200100021009 in words is "two hundred billion, one hundred million, twenty-one thousand, nine".