11143221317 has 2 divisors, whose sum is σ = 11143221318. Its totient is φ = 11143221316.

The previous prime is 11143221301. The next prime is 11143221337. The reversal of 11143221317 is 71312234111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9504105121 + 1639116196 = 97489^2 + 40486^2 .

It is a cyclic number.

It is not a de Polignac number, because 11143221317 - 2⁴ = 11143221301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11143221337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5571610658 + 5571610659.

It is an arithmetic number, because the mean of its divisors is an integer number (5571610659).

Almost surely, 2^11143221317 is an apocalyptic number.

It is an amenable number.

11143221317 is a deficient number, since it is larger than the sum of its proper divisors (1).

11143221317 is an equidigital number, since it uses as much as digits as its factorization.

11143221317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 26.

Adding to 11143221317 its reverse (71312234111), we get a palindrome (82455455428).

The spelling of 11143221317 in words is "eleven billion, one hundred forty-three million, two hundred twenty-one thousand, three hundred seventeen".