201122232173 has 2 divisors, whose sum is σ = 201122232174. Its totient is φ = 201122232172.

The previous prime is 201122232167. The next prime is 201122232229. The reversal of 201122232173 is 371232221102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199757151364 + 1365080809 = 446942^2 + 36947^2 .

It is a cyclic number.

It is not a de Polignac number, because 201122232173 - 2³⁰ = 200048490349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201122235173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100561116086 + 100561116087.

It is an arithmetic number, because the mean of its divisors is an integer number (100561116087).

Almost surely, 2^201122232173 is an apocalyptic number.

It is an amenable number.

201122232173 is a deficient number, since it is larger than the sum of its proper divisors (1).

201122232173 is an equidigital number, since it uses as much as digits as its factorization.

201122232173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 201122232173 its reverse (371232221102), we get a palindrome (572354453275).

The spelling of 201122232173 in words is "two hundred one billion, one hundred twenty-two million, two hundred thirty-two thousand, one hundred seventy-three".