200120020100173 has 2 divisors, whose sum is σ = 200120020100174. Its totient is φ = 200120020100172.

The previous prime is 200120020100159. The next prime is 200120020100219. The reversal of 200120020100173 is 371001020021002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199965109373604 + 154910726569 = 14140902^2 + 393587^2 .

It is a cyclic number.

It is not a de Polignac number, because 200120020100173 - 2²⁵ = 200119986545741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200120020100173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200120020107173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060010050086 + 100060010050087.

It is an arithmetic number, because the mean of its divisors is an integer number (100060010050087).

Almost surely, 2^{200120020100173} is an apocalyptic number.

It is an amenable number.

200120020100173 is a deficient number, since it is larger than the sum of its proper divisors (1).

200120020100173 is an equidigital number, since it uses as much as digits as its factorization.

200120020100173 is an odious number, because the sum of its binary digits is odd.

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

Adding to 200120020100173 its reverse (371001020021002), we get a palindrome (571121040121175).

The spelling of 200120020100173 in words is "two hundred trillion, one hundred twenty billion, twenty million, one hundred thousand, one hundred seventy-three".