13134035221 has 2 divisors, whose sum is σ = 13134035222. Its totient is φ = 13134035220.

The previous prime is 13134035203. The next prime is 13134035249. The reversal of 13134035221 is 12253043131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10336788900 + 2797246321 = 101670^2 + 52889^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13134035221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13134035281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6567017610 + 6567017611.

It is an arithmetic number, because the mean of its divisors is an integer number (6567017611).

Almost surely, 2^13134035221 is an apocalyptic number.

It is an amenable number.

13134035221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13134035221 is an equidigital number, since it uses as much as digits as its factorization.

13134035221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 13134035221 its reverse (12253043131), we get a palindrome (25387078352).

The spelling of 13134035221 in words is "thirteen billion, one hundred thirty-four million, thirty-five thousand, two hundred twenty-one".