11100111010128 has 120 divisors (see below), whose sum is σ = 35511117057728. Its totient is φ = 3170711609856.

The previous prime is 11100111010063. The next prime is 11100111010129. The reversal of 11100111010128 is 82101011100111.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 11100111010128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100111010129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2979276 + ... + 5574612.

Almost surely, 2^{11100111010128} is an apocalyptic number.

11100111010128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11100111010128 is an abundant number, since it is smaller than the sum of its proper divisors (24411006047600).

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

11100111010128 is a wasteful number, since it uses less digits than its factorization.

11100111010128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2599601 (or 2599592 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 18.

Adding to 11100111010128 its reverse (82101011100111), we get a palindrome (93201122110239).

The spelling of 11100111010128 in words is "eleven trillion, one hundred billion, one hundred eleven million, ten thousand, one hundred twenty-eight".