12123203017 has 2 divisors, whose sum is σ = 12123203018. Its totient is φ = 12123203016.

The previous prime is 12123203011. The next prime is 12123203107. The reversal of 12123203017 is 71030232121.

It is a happy number.

12123203017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (12123203107) 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., 8371518016 + 3751685001 = 91496^2 + 61251^2 .

It is a cyclic number.

It is not a de Polignac number, because 12123203017 - 2¹⁵ = 12123170249 is a prime.

It is not a weakly prime, because it can be changed into another prime (12123203011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061601508 + 6061601509.

It is an arithmetic number, because the mean of its divisors is an integer number (6061601509).

Almost surely, 2^12123203017 is an apocalyptic number.

It is an amenable number.

12123203017 is a deficient number, since it is larger than the sum of its proper divisors (1).

12123203017 is an equidigital number, since it uses as much as digits as its factorization.

12123203017 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.

Adding to 12123203017 its reverse (71030232121), we get a palindrome (83153435138).

The spelling of 12123203017 in words is "twelve billion, one hundred twenty-three million, two hundred three thousand, seventeen".