311122201219 has 2 divisors, whose sum is σ = 311122201220. Its totient is φ = 311122201218.

The previous prime is 311122201199. The next prime is 311122201297. The reversal of 311122201219 is 912102221113.

It is a weak prime.

It is an emirp because it is prime and its reverse (912102221113) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311122201219 is a prime.

It is a super-2 number, since 2×311122201219² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311122201193 and 311122201202.

It is not a weakly prime, because it can be changed into another prime (311122231219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155561100609 + 155561100610.

It is an arithmetic number, because the mean of its divisors is an integer number (155561100610).

Almost surely, 2^311122201219 is an apocalyptic number.

311122201219 is a deficient number, since it is larger than the sum of its proper divisors (1).

311122201219 is an equidigital number, since it uses as much as digits as its factorization.

311122201219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 311122201219 in words is "three hundred eleven billion, one hundred twenty-two million, two hundred one thousand, two hundred nineteen".