13211230117 has 2 divisors, whose sum is σ = 13211230118. Its totient is φ = 13211230116.

The previous prime is 13211230091. The next prime is 13211230121. The reversal of 13211230117 is 71103211231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11764873156 + 1446356961 = 108466^2 + 38031^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13211230117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13211230127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6605615058 + 6605615059.

It is an arithmetic number, because the mean of its divisors is an integer number (6605615059).

Almost surely, 2^13211230117 is an apocalyptic number.

It is an amenable number.

13211230117 is a deficient number, since it is larger than the sum of its proper divisors (1).

13211230117 is an equidigital number, since it uses as much as digits as its factorization.

13211230117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 22.

Adding to 13211230117 its reverse (71103211231), we get a palindrome (84314441348).

The spelling of 13211230117 in words is "thirteen billion, two hundred eleven million, two hundred thirty thousand, one hundred seventeen".