11121101112 has 128 divisors (see below), whose sum is σ = 30910014720. Its totient is φ = 3306240000.

The previous prime is 11121101111. The next prime is 11121101149. The reversal of 11121101112 is 21110112111.

11121101112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121101111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3011187 + ... + 3014877.

It is an arithmetic number, because the mean of its divisors is an integer number (241484490).

Almost surely, 2^11121101112 is an apocalyptic number.

11121101112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11121101112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15455007360).

11121101112 is an abundant number, since it is smaller than the sum of its proper divisors (19788913608).

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

11121101112 is a wasteful number, since it uses less digits than its factorization.

11121101112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3925 (or 3921 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11121101112 its reverse (21110112111), we get a palindrome (32231213223).

The spelling of 11121101112 in words is "eleven billion, one hundred twenty-one million, one hundred one thousand, one hundred twelve".