13221413 has 2 divisors, whose sum is σ = 13221414. Its totient is φ = 13221412.

The previous prime is 13221401. The next prime is 13221421. The reversal of 13221413 is 31412231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12974404 + 247009 = 3602^2 + 497^2 .

It is a cyclic number.

It is not a de Polignac number, because 13221413 - 2⁶ = 13221349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13221391 and 13221400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13221443) 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, 6610706 + 6610707.

It is an arithmetic number, because the mean of its divisors is an integer number (6610707).

Almost surely, 2^13221413 is an apocalyptic number.

It is an amenable number.

13221413 is a deficient number, since it is larger than the sum of its proper divisors (1).

13221413 is an equidigital number, since it uses as much as digits as its factorization.

13221413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 17.

The square root of 13221413 is about 3636.1260979234. The cubic root of 13221413 is about 236.4608740272.

Adding to 13221413 its reverse (31412231), we get a palindrome (44633644).

The spelling of 13221413 in words is "thirteen million, two hundred twenty-one thousand, four hundred thirteen".