11123112432 has 80 divisors (see below), whose sum is σ = 30038434560. Its totient is φ = 3540066816.

The previous prime is 11123112421. The next prime is 11123112493. The reversal of 11123112432 is 23421132111.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 11123112399 and 11123112408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 619323 + ... + 637029.

It is an arithmetic number, because the mean of its divisors is an integer number (375480432).

Almost surely, 2^11123112432 is an apocalyptic number.

11123112432 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 11123112432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15019217280).

11123112432 is an abundant number, since it is smaller than the sum of its proper divisors (18915322128).

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

11123112432 is a wasteful number, since it uses less digits than its factorization.

11123112432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18310 (or 18304 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

Adding to 11123112432 its reverse (23421132111), we get a palindrome (34544244543).

The spelling of 11123112432 in words is "eleven billion, one hundred twenty-three million, one hundred twelve thousand, four hundred thirty-two".