12240013312 has 24 divisors (see below), whose sum is σ = 24474054150. Its totient is φ = 6120005632.

The previous prime is 12240013307. The next prime is 12240013319. The reversal of 12240013312 is 21331004221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12209366016 + 30647296 = 110496^2 + 5536^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12240013312.

It is not an unprimeable number, because it can be changed into a prime (12240013319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2986237 + ... + 2990332.

Almost surely, 2^12240013312 is an apocalyptic number.

It is an amenable number.

12240013312 is a deficient number, since it is larger than the sum of its proper divisors (12234040838).

12240013312 is an frugal number, since it uses more digits than its factorization.

12240013312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5976591 (or 5976571 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12240013312 its reverse (21331004221), we get a palindrome (33571017533).

Subtracting 12240013312 from its reverse (21331004221), we obtain a palindrome (9090990909).

The spelling of 12240013312 in words is "twelve billion, two hundred forty million, thirteen thousand, three hundred twelve".