12123019943317 has 2 divisors, whose sum is σ = 12123019943318. Its totient is φ = 12123019943316.

The previous prime is 12123019943273. The next prime is 12123019943371. The reversal of 12123019943317 is 71334991032121.

Together with next prime (12123019943371) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10690225307281 + 1432794636036 = 3269591^2 + 1196994^2 .

It is a cyclic number.

It is not a de Polignac number, because 12123019943317 - 2¹¹ = 12123019941269 is a prime.

It is a super-2 number, since 2×12123019943317² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12123019943917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061509971658 + 6061509971659.

It is an arithmetic number, because the mean of its divisors is an integer number (6061509971659).

Almost surely, 2^{12123019943317} is an apocalyptic number.

It is an amenable number.

12123019943317 is a deficient number, since it is larger than the sum of its proper divisors (1).

12123019943317 is an equidigital number, since it uses as much as digits as its factorization.

12123019943317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 46.

The spelling of 12123019943317 in words is "twelve trillion, one hundred twenty-three billion, nineteen million, nine hundred forty-three thousand, three hundred seventeen".