12232121232 has 20 divisors (see below), whose sum is σ = 31599646640. Its totient is φ = 4077373728.

The previous prime is 12232121221. The next prime is 12232121233. The reversal of 12232121232 is 23212123221.

12232121232 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 a junction number, because it is equal to n+sod(n) for n = 12232121199 and 12232121208.

It is not an unprimeable number, because it can be changed into a prime (12232121233) 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 3 ways as a sum of consecutive naturals, for example, 127417882 + ... + 127417977.

It is an arithmetic number, because the mean of its divisors is an integer number (1579982332).

Almost surely, 2^12232121232 is an apocalyptic number.

12232121232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12232121232 is an abundant number, since it is smaller than the sum of its proper divisors (19367525408).

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

12232121232 is a wasteful number, since it uses less digits than its factorization.

12232121232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254835870 (or 254835864 counting only the distinct ones).

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

Adding to 12232121232 its reverse (23212123221), we get a palindrome (35444244453).

The spelling of 12232121232 in words is "twelve billion, two hundred thirty-two million, one hundred twenty-one thousand, two hundred thirty-two".