111128888900 has 18 divisors (see below), whose sum is σ = 241149689130. Its totient is φ = 44451555520.

The previous prime is 111128888873. The next prime is 111128888947. The reversal of 111128888900 is 9888821111.

It can be written as a sum of positive squares in 3 ways, for example, as 3238975744 + 107889913156 = 56912^2 + 328466^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 555644345 + ... + 555644544.

Almost surely, 2^111128888900 is an apocalyptic number.

111128888900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111128888900 is an abundant number, since it is smaller than the sum of its proper divisors (130020800230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111128888900 is a wasteful number, since it uses less digits than its factorization.

111128888900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111288903 (or 1111288896 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 47.

The spelling of 111128888900 in words is "one hundred eleven billion, one hundred twenty-eight million, eight hundred eighty-eight thousand, nine hundred".