1311111233227 has 2 divisors, whose sum is σ = 1311111233228. Its totient is φ = 1311111233226.

The previous prime is 1311111233203. The next prime is 1311111233261. The reversal of 1311111233227 is 7223321111131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311111233227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311111233195 and 1311111233204.

It is not a weakly prime, because it can be changed into another prime (1311111233827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655555616613 + 655555616614.

It is an arithmetic number, because the mean of its divisors is an integer number (655555616614).

Almost surely, 2^{1311111233227} is an apocalyptic number.

1311111233227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311111233227 is an equidigital number, since it uses as much as digits as its factorization.

1311111233227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 28.

Adding to 1311111233227 its reverse (7223321111131), we get a palindrome (8534432344358).

The spelling of 1311111233227 in words is "one trillion, three hundred eleven billion, one hundred eleven million, two hundred thirty-three thousand, two hundred twenty-seven".