11123044140 has 96 divisors (see below), whose sum is σ = 33944553216. Its totient is φ = 2704976640.

The previous prime is 11123044123. The next prime is 11123044181. The reversal of 11123044140 is 4144032111.

It is a super-2 number, since 2×11123044140² (a number of 21 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 21166 + ... + 150645.

It is an arithmetic number, because the mean of its divisors is an integer number (353589096).

Almost surely, 2^11123044140 is an apocalyptic number.

11123044140 is a gapful number since it is divisible by the number (10) 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 11123044140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16972276608).

11123044140 is an abundant number, since it is smaller than the sum of its proper divisors (22821509076).

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

11123044140 is a wasteful number, since it uses less digits than its factorization.

11123044140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171919 (or 171917 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 11123044140 its reverse (4144032111), we get a palindrome (15267076251).

The spelling of 11123044140 in words is "eleven billion, one hundred twenty-three million, forty-four thousand, one hundred forty".