12232123212 has 96 divisors (see below), whose sum is σ = 30064269312. Its totient is φ = 3863414016.

The previous prime is 12232123187. The next prime is 12232123219. The reversal of 12232123212 is 21232123221.

12232123212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (12232123219) 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, 19954218 + ... + 19954830.

It is an arithmetic number, because the mean of its divisors is an integer number (313169472).

Almost surely, 2^12232123212 is an apocalyptic number.

12232123212 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 12232123212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15032134656).

12232123212 is an abundant number, since it is smaller than the sum of its proper divisors (17832146100).

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

12232123212 is a wasteful number, since it uses less digits than its factorization.

12232123212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207 (or 1205 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

Adding to 12232123212 its reverse (21232123221), we get a palindrome (33464246433).

Subtracting 12232123212 from its reverse (21232123221), we obtain a palindrome (9000000009).

The spelling of 12232123212 in words is "twelve billion, two hundred thirty-two million, one hundred twenty-three thousand, two hundred twelve".