12320043412 has 18 divisors (see below), whose sum is σ = 22902920222. Its totient is φ = 5797666944.

The previous prime is 12320043377. The next prime is 12320043419. The reversal of 12320043412 is 21434002321.

It can be written as a sum of positive squares in 3 ways, for example, as 2111770116 + 10208273296 = 45954^2 + 101036^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320043419) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5327583 + ... + 5329894.

Almost surely, 2^12320043412 is an apocalyptic number.

It is an amenable number.

12320043412 is a deficient number, since it is larger than the sum of its proper divisors (10582876810).

12320043412 is a wasteful number, since it uses less digits than its factorization.

12320043412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10657515 (or 10657496 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 12320043412 its reverse (21434002321), we get a palindrome (33754045733).

The spelling of 12320043412 in words is "twelve billion, three hundred twenty million, forty-three thousand, four hundred twelve".