12232204640 has 48 divisors (see below), whose sum is σ = 29895097680. Its totient is φ = 4724160000.

The previous prime is 12232204619. The next prime is 12232204643. The reversal of 12232204640 is 4640223221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12232204643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1313486 + ... + 1322765.

It is an arithmetic number, because the mean of its divisors is an integer number (622814535).

Almost surely, 2^12232204640 is an apocalyptic number.

12232204640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12232204640 is an abundant number, since it is smaller than the sum of its proper divisors (17662893040).

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

12232204640 is a wasteful number, since it uses less digits than its factorization.

12232204640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2636295 (or 2636287 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 12232204640 its reverse (4640223221), we get a palindrome (16872427861).

The spelling of 12232204640 in words is "twelve billion, two hundred thirty-two million, two hundred four thousand, six hundred forty".