173313010121 has 2 divisors, whose sum is σ = 173313010122. Its totient is φ = 173313010120.

The previous prime is 173313010069. The next prime is 173313010217. The reversal of 173313010121 is 121010313371.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127006704400 + 46306305721 = 356380^2 + 215189^2 .

It is an emirp because it is prime and its reverse (121010313371) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 173313010121 - 2²² = 173308815817 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (173313010621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86656505060 + 86656505061.

It is an arithmetic number, because the mean of its divisors is an integer number (86656505061).

Almost surely, 2^173313010121 is an apocalyptic number.

It is an amenable number.

173313010121 is a deficient number, since it is larger than the sum of its proper divisors (1).

173313010121 is an equidigital number, since it uses as much as digits as its factorization.

173313010121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 23.

Adding to 173313010121 its reverse (121010313371), we get a palindrome (294323323492).

The spelling of 173313010121 in words is "one hundred seventy-three billion, three hundred thirteen million, ten thousand, one hundred twenty-one".