12321210017 has 2 divisors, whose sum is σ = 12321210018. Its totient is φ = 12321210016.

The previous prime is 12321210007. The next prime is 12321210029. The reversal of 12321210017 is 71001212321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10758668176 + 1562541841 = 103724^2 + 39529^2 .

It is a cyclic number.

It is not a de Polignac number, because 12321210017 - 2¹² = 12321205921 is a prime.

It is a super-2 number, since 2×12321210017² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12321210007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160605008 + 6160605009.

It is an arithmetic number, because the mean of its divisors is an integer number (6160605009).

Almost surely, 2^12321210017 is an apocalyptic number.

It is an amenable number.

12321210017 is a deficient number, since it is larger than the sum of its proper divisors (1).

12321210017 is an equidigital number, since it uses as much as digits as its factorization.

12321210017 is an evil number, because the sum of its binary digits is even.

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

Adding to 12321210017 its reverse (71001212321), we get a palindrome (83322422338).

The spelling of 12321210017 in words is "twelve billion, three hundred twenty-one million, two hundred ten thousand, seventeen".