1230123112171 has 2 divisors, whose sum is σ = 1230123112172. Its totient is φ = 1230123112170.

The previous prime is 1230123112159. The next prime is 1230123112219. The reversal of 1230123112171 is 1712113210321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1230123112171 is a prime.

It is not a weakly prime, because it can be changed into another prime (1230123116171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615061556085 + 615061556086.

It is an arithmetic number, because the mean of its divisors is an integer number (615061556086).

Almost surely, 2^{1230123112171} is an apocalyptic number.

1230123112171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230123112171 is an equidigital number, since it uses as much as digits as its factorization.

1230123112171 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 25.

Adding to 1230123112171 its reverse (1712113210321), we get a palindrome (2942236322492).

The spelling of 1230123112171 in words is "one trillion, two hundred thirty billion, one hundred twenty-three million, one hundred twelve thousand, one hundred seventy-one".