200020211173 has 2 divisors, whose sum is σ = 200020211174. Its totient is φ = 200020211172.

The previous prime is 200020211077. The next prime is 200020211179. The reversal of 200020211173 is 371112020002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138683249604 + 61336961569 = 372402^2 + 247663^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200020211173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200020211173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200020211179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100010105586 + 100010105587.

It is an arithmetic number, because the mean of its divisors is an integer number (100010105587).

Almost surely, 2^200020211173 is an apocalyptic number.

It is an amenable number.

200020211173 is a deficient number, since it is larger than the sum of its proper divisors (1).

200020211173 is an equidigital number, since it uses as much as digits as its factorization.

200020211173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 19.

Adding to 200020211173 its reverse (371112020002), we get a palindrome (571132231175).

The spelling of 200020211173 in words is "two hundred billion, twenty million, two hundred eleven thousand, one hundred seventy-three".