11320111217 has 2 divisors, whose sum is σ = 11320111218. Its totient is φ = 11320111216.

The previous prime is 11320111189. The next prime is 11320111259. The reversal of 11320111217 is 71211102311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11320108816 + 2401 = 106396^2 + 49^2 .

It is an emirp because it is prime and its reverse (71211102311) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11320111217 is a prime.

It is not a weakly prime, because it can be changed into another prime (11320111267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5660055608 + 5660055609.

It is an arithmetic number, because the mean of its divisors is an integer number (5660055609).

Almost surely, 2^11320111217 is an apocalyptic number.

It is an amenable number.

11320111217 is a deficient number, since it is larger than the sum of its proper divisors (1).

11320111217 is an equidigital number, since it uses as much as digits as its factorization.

11320111217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 20.

Adding to 11320111217 its reverse (71211102311), we get a palindrome (82531213528).

The spelling of 11320111217 in words is "eleven billion, three hundred twenty million, one hundred eleven thousand, two hundred seventeen".