13321103221 has 2 divisors, whose sum is σ = 13321103222. Its totient is φ = 13321103220.

The previous prime is 13321103179. The next prime is 13321103227. The reversal of 13321103221 is 12230112331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12052746225 + 1268356996 = 109785^2 + 35614^2 .

It is a cyclic number.

It is not a de Polignac number, because 13321103221 - 2¹¹ = 13321101173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13321103227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6660551610 + 6660551611.

It is an arithmetic number, because the mean of its divisors is an integer number (6660551611).

Almost surely, 2^13321103221 is an apocalyptic number.

It is an amenable number.

13321103221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13321103221 is an equidigital number, since it uses as much as digits as its factorization.

13321103221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13321103221 its reverse (12230112331), we get a palindrome (25551215552).

It can be divided in two parts, 1332110 and 3221, that added together give a palindrome (1335331).

The spelling of 13321103221 in words is "thirteen billion, three hundred twenty-one million, one hundred three thousand, two hundred twenty-one".