12123320320 has 52 divisors (see below), whose sum is σ = 29092466160. Its totient is φ = 4849319936.

The previous prime is 12123320311. The next prime is 12123320333. The reversal of 12123320320 is 2302332121.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275500 + ... + 316459.

Almost surely, 2^12123320320 is an apocalyptic number.

12123320320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12123320320 is an abundant number, since it is smaller than the sum of its proper divisors (16969145840).

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

12123320320 is an frugal number, since it uses more digits than its factorization.

12123320320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591988 (or 591966 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 12123320320 its reverse (2302332121), we get a palindrome (14425652441).

The spelling of 12123320320 in words is "twelve billion, one hundred twenty-three million, three hundred twenty thousand, three hundred twenty".