12433221320 has 128 divisors (see below), whose sum is σ = 33286256640. Its totient is φ = 4132761600.

The previous prime is 12433221319. The next prime is 12433221329. The reversal of 12433221320 is 2312233421.

12433221320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (12433221329) 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, 172745 + ... + 233895.

It is an arithmetic number, because the mean of its divisors is an integer number (260048880).

Almost surely, 2^12433221320 is an apocalyptic number.

12433221320 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 12433221320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16643128320).

12433221320 is an abundant number, since it is smaller than the sum of its proper divisors (20853035320).

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

12433221320 is a wasteful number, since it uses less digits than its factorization.

12433221320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61215 (or 61211 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 12433221320 its reverse (2312233421), we get a palindrome (14745454741).

The spelling of 12433221320 in words is "twelve billion, four hundred thirty-three million, two hundred twenty-one thousand, three hundred twenty".