13215302281 has 2 divisors, whose sum is σ = 13215302282. Its totient is φ = 13215302280.

The previous prime is 13215302279. The next prime is 13215302311. The reversal of 13215302281 is 18220351231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10876612681 + 2338689600 = 104291^2 + 48360^2 .

It is an emirp because it is prime and its reverse (18220351231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13215302281 - 2¹ = 13215302279 is a prime.

It is a super-2 number, since 2×13215302281² (a number of 21 digits) contains 22 as substring.

Together with 13215302279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13215300281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6607651140 + 6607651141.

It is an arithmetic number, because the mean of its divisors is an integer number (6607651141).

Almost surely, 2^13215302281 is an apocalyptic number.

It is an amenable number.

13215302281 is a deficient number, since it is larger than the sum of its proper divisors (1).

13215302281 is an equidigital number, since it uses as much as digits as its factorization.

13215302281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 13215302281 in words is "thirteen billion, two hundred fifteen million, three hundred two thousand, two hundred eighty-one".