11113311111211 has 2 divisors, whose sum is σ = 11113311111212. Its totient is φ = 11113311111210.

The previous prime is 11113311111181. The next prime is 11113311111229. The reversal of 11113311111211 is 11211111331111.

It is a m-pointer prime, because the next prime (11113311111229) can be obtained adding 11113311111211 to its product of digits (18).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11113311111211 - 2¹¹ = 11113311109163 is a prime.

It is not a weakly prime, because it can be changed into another prime (11113311111241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556655555605 + 5556655555606.

It is an arithmetic number, because the mean of its divisors is an integer number (5556655555606).

Almost surely, 2^{11113311111211} is an apocalyptic number.

11113311111211 is a deficient number, since it is larger than the sum of its proper divisors (1).

11113311111211 is an equidigital number, since it uses as much as digits as its factorization.

11113311111211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18, while the sum is 19.

Adding to 11113311111211 its reverse (11211111331111), we get a palindrome (22324422442322).

The spelling of 11113311111211 in words is "eleven trillion, one hundred thirteen billion, three hundred eleven million, one hundred eleven thousand, two hundred eleven".