11312201111 has 2 divisors, whose sum is σ = 11312201112. Its totient is φ = 11312201110.

The previous prime is 11312201083. The next prime is 11312201143. The reversal of 11312201111 is 11110221311.

11312201111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11312201111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11312201161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5656100555 + 5656100556.

It is an arithmetic number, because the mean of its divisors is an integer number (5656100556).

Almost surely, 2^11312201111 is an apocalyptic number.

11312201111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11312201111 is an equidigital number, since it uses as much as digits as its factorization.

11312201111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 11312201111 its reverse (11110221311), we get a palindrome (22422422422).

The spelling of 11312201111 in words is "eleven billion, three hundred twelve million, two hundred one thousand, one hundred eleven".