200010000210021 has 6 divisors (see below), whose sum is σ = 288903333636710. Its totient is φ = 133340000140008.

The previous prime is 200010000209989. The next prime is 200010000210071. The reversal of 200010000210021 is 120012000010002.

It can be written as a sum of positive squares in only one way, i.e., 151099139633121 + 48910860576900 = 12292239^2 + 6993630^2 .

It is not a de Polignac number, because 200010000210021 - 2⁵ = 200010000209989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 22223333356669 = 200010000210021 / (2 + 0 + 0 + 0 + 1 + 0 + 0 + 0 + 0 + 2 + 1 + 0 + 0 + 2 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200010000209985 and 200010000210012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200010000210071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11111666678326 + ... + 11111666678343.

Almost surely, 2^{200010000210021} is an apocalyptic number.

It is an amenable number.

200010000210021 is a deficient number, since it is larger than the sum of its proper divisors (88893333426689).

200010000210021 is a wasteful number, since it uses less digits than its factorization.

200010000210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22223333356675 (or 22223333356672 counting only the distinct ones).

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

Adding to 200010000210021 its reverse (120012000010002), we get a palindrome (320022000220023).

The spelling of 200010000210021 in words is "two hundred trillion, ten billion, two hundred ten thousand, twenty-one".