200010921 has 16 divisors (see below), whose sum is σ = 303575040. Its totient is φ = 115947920.

The previous prime is 200010911. The next prime is 200010947. The reversal of 200010921 is 129010002.

It is a happy number.

It is not a de Polignac number, because 200010921 - 2⁷ = 200010793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200010921.

It is not an unprimeable number, because it can be changed into a prime (200010901) 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, 131001 + ... + 132518.

It is an arithmetic number, because the mean of its divisors is an integer number (18973440).

Almost surely, 2^200010921 is an apocalyptic number.

It is an amenable number.

200010921 is a deficient number, since it is larger than the sum of its proper divisors (103564119).

200010921 is a wasteful number, since it uses less digits than its factorization.

200010921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263556.

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

The square root of 200010921 is about 14142.5217341180. The cubic root of 200010921 is about 584.8141918481.

Adding to 200010921 its reverse (129010002), we get a palindrome (329020923).

It can be divided in two parts, 2000 and 10921, that added together give a palindrome (12921).

The spelling of 200010921 in words is "two hundred million, ten thousand, nine hundred twenty-one".