13221200117 has 2 divisors, whose sum is σ = 13221200118. Its totient is φ = 13221200116.

The previous prime is 13221200099. The next prime is 13221200119. The reversal of 13221200117 is 71100212231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12049233361 + 1171966756 = 109769^2 + 34234^2 .

It is a cyclic number.

It is not a de Polignac number, because 13221200117 - 2⁸ = 13221199861 is a prime.

Together with 13221200119, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13221200119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610600058 + 6610600059.

It is an arithmetic number, because the mean of its divisors is an integer number (6610600059).

Almost surely, 2^13221200117 is an apocalyptic number.

It is an amenable number.

13221200117 is a deficient number, since it is larger than the sum of its proper divisors (1).

13221200117 is an equidigital number, since it uses as much as digits as its factorization.

13221200117 is an evil number, because the sum of its binary digits is even.

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

Adding to 13221200117 its reverse (71100212231), we get a palindrome (84321412348).

The spelling of 13221200117 in words is "thirteen billion, two hundred twenty-one million, two hundred thousand, one hundred seventeen".