201201120173 has 2 divisors, whose sum is σ = 201201120174. Its totient is φ = 201201120172.

The previous prime is 201201120167. The next prime is 201201120251. The reversal of 201201120173 is 371021102102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194077253764 + 7123866409 = 440542^2 + 84403^2 .

It is a cyclic number.

It is not a de Polignac number, because 201201120173 - 2²² = 201196925869 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201201123173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100600560086 + 100600560087.

It is an arithmetic number, because the mean of its divisors is an integer number (100600560087).

Almost surely, 2^201201120173 is an apocalyptic number.

It is an amenable number.

201201120173 is a deficient number, since it is larger than the sum of its proper divisors (1).

201201120173 is an equidigital number, since it uses as much as digits as its factorization.

201201120173 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 20.

Adding to 201201120173 its reverse (371021102102), we get a palindrome (572222222275).

The spelling of 201201120173 in words is "two hundred one billion, two hundred one million, one hundred twenty thousand, one hundred seventy-three".