13320217 has 2 divisors, whose sum is σ = 13320218. Its totient is φ = 13320216.

The previous prime is 13320191. The next prime is 13320221. The reversal of 13320217 is 71202331.

13320217 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7420176 + 5900041 = 2724^2 + 2429^2 .

It is an emirp because it is prime and its reverse (71202331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13320217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13320194 and 13320203.

It is not a weakly prime, because it can be changed into another prime (13320247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6660108 + 6660109.

It is an arithmetic number, because the mean of its divisors is an integer number (6660109).

Almost surely, 2^13320217 is an apocalyptic number.

It is an amenable number.

13320217 is a deficient number, since it is larger than the sum of its proper divisors (1).

13320217 is an equidigital number, since it uses as much as digits as its factorization.

13320217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 13320217 is about 3649.6872468747. The cubic root of 13320217 is about 237.0484391250.

Adding to 13320217 its reverse (71202331), we get a palindrome (84522548).

The spelling of 13320217 in words is "thirteen million, three hundred twenty thousand, two hundred seventeen".