1311222332117 has 2 divisors, whose sum is σ = 1311222332118. Its totient is φ = 1311222332116.

The previous prime is 1311222332111. The next prime is 1311222332179. The reversal of 1311222332117 is 7112332221131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1247496883396 + 63725448721 = 1116914^2 + 252439^2 .

It is an emirp because it is prime and its reverse (7112332221131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1311222332117 - 2¹² = 1311222328021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1311222332117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311222332111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655611166058 + 655611166059.

It is an arithmetic number, because the mean of its divisors is an integer number (655611166059).

Almost surely, 2^{1311222332117} is an apocalyptic number.

It is an amenable number.

1311222332117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311222332117 is an equidigital number, since it uses as much as digits as its factorization.

1311222332117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 29.

Adding to 1311222332117 its reverse (7112332221131), we get a palindrome (8423554553248).

The spelling of 1311222332117 in words is "one trillion, three hundred eleven billion, two hundred twenty-two million, three hundred thirty-two thousand, one hundred seventeen".