111111388888 has 32 divisors (see below), whose sum is σ = 213043723200. Its totient is φ = 54302810112.

The previous prime is 111111388879. The next prime is 111111388891. The reversal of 111111388888 is 888883111111.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97006 + ... + 481282.

It is an arithmetic number, because the mean of its divisors is an integer number (6657616350).

Almost surely, 2^111111388888 is an apocalyptic number.

It is an amenable number.

111111388888 is a deficient number, since it is larger than the sum of its proper divisors (101932334312).

111111388888 is a wasteful number, since it uses less digits than its factorization.

111111388888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385099 (or 385095 counting only the distinct ones).

The product of its digits is 98304, while the sum is 49.

Adding to 111111388888 its reverse (888883111111), we get a palindrome (999994499999).

The spelling of 111111388888 in words is "one hundred eleven billion, one hundred eleven million, three hundred eighty-eight thousand, eight hundred eighty-eight".