13253133221 has 2 divisors, whose sum is σ = 13253133222. Its totient is φ = 13253133220.

The previous prime is 13253133217. The next prime is 13253133227. The reversal of 13253133221 is 12233135231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10615180900 + 2637952321 = 103030^2 + 51361^2 .

It is a cyclic number.

It is not a de Polignac number, because 13253133221 - 2² = 13253133217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13253133227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6626566610 + 6626566611.

It is an arithmetic number, because the mean of its divisors is an integer number (6626566611).

Almost surely, 2^13253133221 is an apocalyptic number.

It is an amenable number.

13253133221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13253133221 is an equidigital number, since it uses as much as digits as its factorization.

13253133221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 26.

Adding to 13253133221 its reverse (12233135231), we get a palindrome (25486268452).

The spelling of 13253133221 in words is "thirteen billion, two hundred fifty-three million, one hundred thirty-three thousand, two hundred twenty-one".