12021323317 has 2 divisors, whose sum is σ = 12021323318. Its totient is φ = 12021323316.

The previous prime is 12021323311. The next prime is 12021323341. The reversal of 12021323317 is 71332312021.

It is a happy number.

12021323317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8477621476 + 3543701841 = 92074^2 + 59529^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021323317 - 2¹¹ = 12021321269 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12021323291 and 12021323300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12021323311) 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, 6010661658 + 6010661659.

It is an arithmetic number, because the mean of its divisors is an integer number (6010661659).

Almost surely, 2^12021323317 is an apocalyptic number.

It is an amenable number.

12021323317 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021323317 is an equidigital number, since it uses as much as digits as its factorization.

12021323317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

Adding to 12021323317 its reverse (71332312021), we get a palindrome (83353635338).

The spelling of 12021323317 in words is "twelve billion, twenty-one million, three hundred twenty-three thousand, three hundred seventeen".