13221199 has 2 divisors, whose sum is σ = 13221200. Its totient is φ = 13221198.

The previous prime is 13221191. The next prime is 13221209. The reversal of 13221199 is 99112231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13221199 - 2³ = 13221191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13221191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610599 + 6610600.

It is an arithmetic number, because the mean of its divisors is an integer number (6610600).

Almost surely, 2^13221199 is an apocalyptic number.

13221199 is a deficient number, since it is larger than the sum of its proper divisors (1).

13221199 is an equidigital number, since it uses as much as digits as its factorization.

13221199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 28.

The square root of 13221199 is about 3636.0966708821. The cubic root of 13221199 is about 236.4595982458.

The spelling of 13221199 in words is "thirteen million, two hundred twenty-one thousand, one hundred ninety-nine".