2123102173 has 2 divisors, whose sum is σ = 2123102174. Its totient is φ = 2123102172.

The previous prime is 2123102159. The next prime is 2123102183. The reversal of 2123102173 is 3712013212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1692664164 + 430438009 = 41142^2 + 20747^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123102173 - 2⁵ = 2123102141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2123102183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061551086 + 1061551087.

It is an arithmetic number, because the mean of its divisors is an integer number (1061551087).

Almost surely, 2^2123102173 is an apocalyptic number.

It is an amenable number.

2123102173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123102173 is an equidigital number, since it uses as much as digits as its factorization.

2123102173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 2123102173 is about 46077.1328643613. The cubic root of 2123102173 is about 1285.2579481863.

Adding to 2123102173 its reverse (3712013212), we get a palindrome (5835115385).

The spelling of 2123102173 in words is "two billion, one hundred twenty-three million, one hundred two thousand, one hundred seventy-three".