123102012017 has 2 divisors, whose sum is σ = 123102012018. Its totient is φ = 123102012016.

The previous prime is 123102012001. The next prime is 123102012037. The reversal of 123102012017 is 710210201321.

It is an a-pointer prime, because the next prime (123102012037) can be obtained adding 123102012017 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78615187456 + 44486824561 = 280384^2 + 210919^2 .

It is an emirp because it is prime and its reverse (710210201321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123102012017 - 2⁴ = 123102012001 is a prime.

It is a super-2 number, since 2×123102012017² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123102012017.

It is not a weakly prime, because it can be changed into another prime (123102012037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61551006008 + 61551006009.

It is an arithmetic number, because the mean of its divisors is an integer number (61551006009).

Almost surely, 2^123102012017 is an apocalyptic number.

It is an amenable number.

123102012017 is a deficient number, since it is larger than the sum of its proper divisors (1).

123102012017 is an equidigital number, since it uses as much as digits as its factorization.

123102012017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 20.

Adding to 123102012017 its reverse (710210201321), we get a palindrome (833312213338).

The spelling of 123102012017 in words is "one hundred twenty-three billion, one hundred two million, twelve thousand, seventeen".