13321222217 has 2 divisors, whose sum is σ = 13321222218. Its totient is φ = 13321222216.

The previous prime is 13321222171. The next prime is 13321222223. The reversal of 13321222217 is 71222212331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9021010441 + 4300211776 = 94979^2 + 65576^2 .

It is a cyclic number.

It is not a de Polignac number, because 13321222217 - 2⁶ = 13321222153 is a prime.

It is a super-2 number, since 2×13321222217² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13321222417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6660611108 + 6660611109.

It is an arithmetic number, because the mean of its divisors is an integer number (6660611109).

Almost surely, 2^13321222217 is an apocalyptic number.

It is an amenable number.

13321222217 is a deficient number, since it is larger than the sum of its proper divisors (1).

13321222217 is an equidigital number, since it uses as much as digits as its factorization.

13321222217 is an odious number, because the sum of its binary digits is odd.

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

Adding to 13321222217 its reverse (71222212331), we get a palindrome (84543434548).

The spelling of 13321222217 in words is "thirteen billion, three hundred twenty-one million, two hundred twenty-two thousand, two hundred seventeen".