11211313111 has 2 divisors, whose sum is σ = 11211313112. Its totient is φ = 11211313110.

The previous prime is 11211313097. The next prime is 11211313117. The reversal of 11211313111 is 11131311211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11211313111 - 2⁹ = 11211312599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11211313117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605656555 + 5605656556.

It is an arithmetic number, because the mean of its divisors is an integer number (5605656556).

Almost surely, 2^11211313111 is an apocalyptic number.

11211313111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211313111 is an equidigital number, since it uses as much as digits as its factorization.

11211313111 is an odious number, because the sum of its binary digits is odd.

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

Adding to 11211313111 its reverse (11131311211), we get a palindrome (22342624322).

The spelling of 11211313111 in words is "eleven billion, two hundred eleven million, three hundred thirteen thousand, one hundred eleven".