13211311111 has 2 divisors, whose sum is σ = 13211311112. Its totient is φ = 13211311110.

The previous prime is 13211311073. The next prime is 13211311117. The reversal of 13211311111 is 11111311231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13211311111 - 2⁹ = 13211310599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13211311117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6605655555 + 6605655556.

It is an arithmetic number, because the mean of its divisors is an integer number (6605655556).

Almost surely, 2^13211311111 is an apocalyptic number.

13211311111 is a deficient number, since it is larger than the sum of its proper divisors (1).

13211311111 is an equidigital number, since it uses as much as digits as its factorization.

13211311111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18, while the sum is 16.

Adding to 13211311111 its reverse (11111311231), we get a palindrome (24322622342).

The spelling of 13211311111 in words is "thirteen billion, two hundred eleven million, three hundred eleven thousand, one hundred eleven".