13102021217 has 2 divisors, whose sum is σ = 13102021218. Its totient is φ = 13102021216.

The previous prime is 13102021187. The next prime is 13102021253. The reversal of 13102021217 is 71212020131.

13102021217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8670589456 + 4431431761 = 93116^2 + 66569^2 .

It is a cyclic number.

It is not a de Polignac number, because 13102021217 - 2¹² = 13102017121 is a prime.

It is a super-2 number, since 2×13102021217² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13102021817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6551010608 + 6551010609.

It is an arithmetic number, because the mean of its divisors is an integer number (6551010609).

Almost surely, 2^13102021217 is an apocalyptic number.

It is an amenable number.

13102021217 is a deficient number, since it is larger than the sum of its proper divisors (1).

13102021217 is an equidigital number, since it uses as much as digits as its factorization.

13102021217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 20.

Adding to 13102021217 its reverse (71212020131), we get a palindrome (84314041348).

The spelling of 13102021217 in words is "thirteen billion, one hundred two million, twenty-one thousand, two hundred seventeen".