12211122317 has 2 divisors, whose sum is σ = 12211122318. Its totient is φ = 12211122316.

The previous prime is 12211122299. The next prime is 12211122347. The reversal of 12211122317 is 71322111221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11749259236 + 461863081 = 108394^2 + 21491^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12211122317 is a prime.

It is a super-2 number, since 2×12211122317² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12211122292 and 12211122301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12211122347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105561158 + 6105561159.

It is an arithmetic number, because the mean of its divisors is an integer number (6105561159).

Almost surely, 2^12211122317 is an apocalyptic number.

It is an amenable number.

12211122317 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211122317 is an equidigital number, since it uses as much as digits as its factorization.

12211122317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336, while the sum is 23.

Adding to 12211122317 its reverse (71322111221), we get a palindrome (83533233538).

The spelling of 12211122317 in words is "twelve billion, two hundred eleven million, one hundred twenty-two thousand, three hundred seventeen".