13220329 has 2 divisors, whose sum is σ = 13220330. Its totient is φ = 13220328.

The previous prime is 13220309. The next prime is 13220351. The reversal of 13220329 is 92302231.

It is an a-pointer prime, because the next prime (13220351) can be obtained adding 13220329 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12588304 + 632025 = 3548^2 + 795^2 .

It is a cyclic number.

It is not a de Polignac number, because 13220329 - 2¹⁵ = 13187561 is a prime.

It is not a weakly prime, because it can be changed into another prime (13220309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610164 + 6610165.

It is an arithmetic number, because the mean of its divisors is an integer number (6610165).

Almost surely, 2^13220329 is an apocalyptic number.

It is an amenable number.

13220329 is a deficient number, since it is larger than the sum of its proper divisors (1).

13220329 is an equidigital number, since it uses as much as digits as its factorization.

13220329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 13220329 is about 3635.9770351310. The cubic root of 13220329 is about 236.4544115159.

The spelling of 13220329 in words is "thirteen million, two hundred twenty thousand, three hundred twenty-nine".