200321211173 has 2 divisors, whose sum is σ = 200321211174. Its totient is φ = 200321211172.

The previous prime is 200321211161. The next prime is 200321211247. The reversal of 200321211173 is 371112123002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188340376324 + 11980834849 = 433982^2 + 109457^2 .

It is a cyclic number.

It is not a de Polignac number, because 200321211173 - 2²⁰ = 200320162597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200321211113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100160605586 + 100160605587.

It is an arithmetic number, because the mean of its divisors is an integer number (100160605587).

Almost surely, 2^200321211173 is an apocalyptic number.

It is an amenable number.

200321211173 is a deficient number, since it is larger than the sum of its proper divisors (1).

200321211173 is an equidigital number, since it uses as much as digits as its factorization.

200321211173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 23.

Adding to 200321211173 its reverse (371112123002), we get a palindrome (571433334175).

The spelling of 200321211173 in words is "two hundred billion, three hundred twenty-one million, two hundred eleven thousand, one hundred seventy-three".