12432331220 has 48 divisors (see below), whose sum is σ = 27255191040. Its totient is φ = 4754593536.

The previous prime is 12432331207. The next prime is 12432331267. The reversal of 12432331220 is 2213323421.

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

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, 1361189 + ... + 1370291.

It is an arithmetic number, because the mean of its divisors is an integer number (567816480).

Almost surely, 2^12432331220 is an apocalyptic number.

12432331220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12432331220 is an abundant number, since it is smaller than the sum of its proper divisors (14822859820).

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

12432331220 is a wasteful number, since it uses less digits than its factorization.

12432331220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12104 (or 12102 counting only the distinct ones).

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

Adding to 12432331220 its reverse (2213323421), we get a palindrome (14645654641).

The spelling of 12432331220 in words is "twelve billion, four hundred thirty-two million, three hundred thirty-one thousand, two hundred twenty".