200021668337 has 2 divisors, whose sum is σ = 200021668338. Its totient is φ = 200021668336.

The previous prime is 200021668333. The next prime is 200021668339. The reversal of 200021668337 is 733866120002.

200021668337 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167411087281 + 32610581056 = 409159^2 + 180584^2 .

It is a cyclic number.

It is not a de Polignac number, because 200021668337 - 2² = 200021668333 is a prime.

Together with 200021668339, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200021668337.

It is not a weakly prime, because it can be changed into another prime (200021668333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100010834168 + 100010834169.

It is an arithmetic number, because the mean of its divisors is an integer number (100010834169).

Almost surely, 2^200021668337 is an apocalyptic number.

It is an amenable number.

200021668337 is a deficient number, since it is larger than the sum of its proper divisors (1).

200021668337 is an equidigital number, since it uses as much as digits as its factorization.

200021668337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 38.

Adding to 200021668337 its reverse (733866120002), we get a palindrome (933887788339).

The spelling of 200021668337 in words is "two hundred billion, twenty-one million, six hundred sixty-eight thousand, three hundred thirty-seven".