12012243317 has 2 divisors, whose sum is σ = 12012243318. Its totient is φ = 12012243316.

The previous prime is 12012243301. The next prime is 12012243337. The reversal of 12012243317 is 71334221021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11092091761 + 920151556 = 105319^2 + 30334^2 .

It is a cyclic number.

It is not a de Polignac number, because 12012243317 - 2⁴ = 12012243301 is a prime.

It is a super-2 number, since 2×12012243317² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12012243337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006121658 + 6006121659.

It is an arithmetic number, because the mean of its divisors is an integer number (6006121659).

Almost surely, 2^12012243317 is an apocalyptic number.

It is an amenable number.

12012243317 is a deficient number, since it is larger than the sum of its proper divisors (1).

12012243317 is an equidigital number, since it uses as much as digits as its factorization.

12012243317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 12012243317 its reverse (71334221021), we get a palindrome (83346464338).

The spelling of 12012243317 in words is "twelve billion, twelve million, two hundred forty-three thousand, three hundred seventeen".