13113120217 has 2 divisors, whose sum is σ = 13113120218. Its totient is φ = 13113120216.

The previous prime is 13113120151. The next prime is 13113120281. The reversal of 13113120217 is 71202131131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12547584256 + 565535961 = 112016^2 + 23781^2 .

It is a cyclic number.

It is not a de Polignac number, because 13113120217 - 2¹¹ = 13113118169 is a prime.

It is not a weakly prime, because it can be changed into another prime (13113120287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6556560108 + 6556560109.

It is an arithmetic number, because the mean of its divisors is an integer number (6556560109).

Almost surely, 2^13113120217 is an apocalyptic number.

It is an amenable number.

13113120217 is a deficient number, since it is larger than the sum of its proper divisors (1).

13113120217 is an equidigital number, since it uses as much as digits as its factorization.

13113120217 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 13113120217 its reverse (71202131131), we get a palindrome (84315251348).

The spelling of 13113120217 in words is "thirteen billion, one hundred thirteen million, one hundred twenty thousand, two hundred seventeen".