12232023440 has 160 divisors (see below), whose sum is σ = 35199580416. Its totient is φ = 3849431040.

The previous prime is 12232023439. The next prime is 12232023467. The reversal of 12232023440 is 4432023221.

12232023440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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, 1313039 + ... + 1322321.

Almost surely, 2^12232023440 is an apocalyptic number.

12232023440 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 12232023440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17599790208).

12232023440 is an abundant number, since it is smaller than the sum of its proper divisors (22967556976).

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

12232023440 is a wasteful number, since it uses less digits than its factorization.

12232023440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9497 (or 9491 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 12232023440 its reverse (4432023221), we get a palindrome (16664046661).

The spelling of 12232023440 in words is "twelve billion, two hundred thirty-two million, twenty-three thousand, four hundred forty".