12123330312 has 32 divisors (see below), whose sum is σ = 31127472000. Its totient is φ = 3931890624.

The previous prime is 12123330299. The next prime is 12123330313. The reversal of 12123330312 is 21303332121.

It is not an unprimeable number, because it can be changed into a prime (12123330313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6825312 + ... + 6827087.

It is an arithmetic number, because the mean of its divisors is an integer number (972733500).

Almost surely, 2^12123330312 is an apocalyptic number.

12123330312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12123330312 is an abundant number, since it is smaller than the sum of its proper divisors (19004141688).

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

12123330312 is a wasteful number, since it uses less digits than its factorization.

12123330312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13652445 (or 13652441 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 12123330312 its reverse (21303332121), we get a palindrome (33426662433).

The spelling of 12123330312 in words is "twelve billion, one hundred twenty-three million, three hundred thirty thousand, three hundred twelve".