11111122221713 has 2 divisors, whose sum is σ = 11111122221714. Its totient is φ = 11111122221712.

The previous prime is 11111122221691. The next prime is 11111122221721. The reversal of 11111122221713 is 31712222111111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9720003406864 + 1391118814849 = 3117692^2 + 1179457^2 .

It is a cyclic number.

It is not a de Polignac number, because 11111122221713 - 2¹⁶ = 11111122156177 is a prime.

It is not a weakly prime, because it can be changed into another prime (11111122221113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555561110856 + 5555561110857.

It is an arithmetic number, because the mean of its divisors is an integer number (5555561110857).

Almost surely, 2^{11111122221713} is an apocalyptic number.

It is an amenable number.

11111122221713 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111122221713 is an equidigital number, since it uses as much as digits as its factorization.

11111122221713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336, while the sum is 26.

Adding to 11111122221713 its reverse (31712222111111), we get a palindrome (42823344332824).

The spelling of 11111122221713 in words is "eleven trillion, one hundred eleven billion, one hundred twenty-two million, two hundred twenty-one thousand, seven hundred thirteen".