13413213221 has 2 divisors, whose sum is σ = 13413213222. Its totient is φ = 13413213220.

The previous prime is 13413213217. The next prime is 13413213239. The reversal of 13413213221 is 12231231431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13412882596 + 330625 = 115814^2 + 575^2 .

It is a cyclic number.

It is not a de Polignac number, because 13413213221 - 2² = 13413213217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13413210221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6706606610 + 6706606611.

It is an arithmetic number, because the mean of its divisors is an integer number (6706606611).

Almost surely, 2^13413213221 is an apocalyptic number.

It is an amenable number.

13413213221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13413213221 is an equidigital number, since it uses as much as digits as its factorization.

13413213221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 23.

Adding to 13413213221 its reverse (12231231431), we get a palindrome (25644444652).

The spelling of 13413213221 in words is "thirteen billion, four hundred thirteen million, two hundred thirteen thousand, two hundred twenty-one".