11123232112 has 80 divisors (see below), whose sum is σ = 22954155840. Its totient is φ = 5213085696.

The previous prime is 11123232067. The next prime is 11123232119. The reversal of 11123232112 is 21123232111.

It is a self number, because there is not a number n which added to its sum of digits gives 11123232112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123232119) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2383093 + ... + 2387755.

It is an arithmetic number, because the mean of its divisors is an integer number (286926948).

Almost surely, 2^11123232112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11123232112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11477077920).

11123232112 is an abundant number, since it is smaller than the sum of its proper divisors (11830923728).

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

11123232112 is a wasteful number, since it uses less digits than its factorization.

11123232112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4850 (or 4844 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

Adding to 11123232112 its reverse (21123232111), we get a palindrome (32246464223).

Subtracting 11123232112 from its reverse (21123232111), we obtain a palindrome (9999999999).

The spelling of 11123232112 in words is "eleven billion, one hundred twenty-three million, two hundred thirty-two thousand, one hundred twelve".