13222091 has 2 divisors, whose sum is σ = 13222092. Its totient is φ = 13222090.

The previous prime is 13222067. The next prime is 13222093. The reversal of 13222091 is 19022231.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13222091 is a prime.

Together with 13222093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13222093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6611045 + 6611046.

It is an arithmetic number, because the mean of its divisors is an integer number (6611046).

Almost surely, 2^13222091 is an apocalyptic number.

13222091 is a deficient number, since it is larger than the sum of its proper divisors (1).

13222091 is an equidigital number, since it uses as much as digits as its factorization.

13222091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 13222091 is about 3636.2193278184. The cubic root of 13222091 is about 236.4649158981.

The spelling of 13222091 in words is "thirteen million, two hundred twenty-two thousand, ninety-one".