13220312213 has 2 divisors, whose sum is σ = 13220312214. Its totient is φ = 13220312212.

The previous prime is 13220312197. The next prime is 13220312227. The reversal of 13220312213 is 31221302231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6959230084 + 6261082129 = 83422^2 + 79127^2 .

It is a cyclic number.

It is not a de Polignac number, because 13220312213 - 2⁴ = 13220312197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13220312513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610156106 + 6610156107.

It is an arithmetic number, because the mean of its divisors is an integer number (6610156107).

Almost surely, 2^13220312213 is an apocalyptic number.

It is an amenable number.

13220312213 is a deficient number, since it is larger than the sum of its proper divisors (1).

13220312213 is an equidigital number, since it uses as much as digits as its factorization.

13220312213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13220312213 its reverse (31221302231), we get a palindrome (44441614444).

The spelling of 13220312213 in words is "thirteen billion, two hundred twenty million, three hundred twelve thousand, two hundred thirteen".