11188888111 has 2 divisors, whose sum is σ = 11188888112. Its totient is φ = 11188888110.

The previous prime is 11188888099. The next prime is 11188888129.

It is a happy number.

11188888111 is nontrivially palindromic in base 10.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 11188888111 - 2¹⁷ = 11188757039 is a prime.

11188888111 is a strobogrammatic number because it is the same when read upside-down.

It is a zygodrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11188888811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5594444055 + 5594444056.

It is an arithmetic number, because the mean of its divisors is an integer number (5594444056).

Almost surely, 2^11188888111 is an apocalyptic number.

11188888111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11188888111 is an equidigital number, since it uses as much as digits as its factorization.

11188888111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32768, while the sum is 46.

The spelling of 11188888111 in words is "eleven billion, one hundred eighty-eight million, eight hundred eighty-eight thousand, one hundred eleven".