11123321113111 has 2 divisors, whose sum is σ = 11123321113112. Its totient is φ = 11123321113110.

The previous prime is 11123321113097. The next prime is 11123321113133. The reversal of 11123321113111 is 11131112332111.

It is a happy number.

11123321113111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (11123321113133) can be obtained adding 11123321113111 to its sum of digits (22).

It is a weak prime.

It is an emirp because it is prime and its reverse (11131112332111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11123321113111 - 2⁷ = 11123321112983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11123321113171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561660556555 + 5561660556556.

It is an arithmetic number, because the mean of its divisors is an integer number (5561660556556).

Almost surely, 2^{11123321113111} is an apocalyptic number.

11123321113111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11123321113111 is an equidigital number, since it uses as much as digits as its factorization.

11123321113111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108, while the sum is 22.

Adding to 11123321113111 its reverse (11131112332111), we get a palindrome (22254433445222).

The spelling of 11123321113111 in words is "eleven trillion, one hundred twenty-three billion, three hundred twenty-one million, one hundred thirteen thousand, one hundred eleven".