12245323312 has 120 divisors (see below), whose sum is σ = 26244972000. Its totient is φ = 5515259904.

The previous prime is 12245323297. The next prime is 12245323333. The reversal of 12245323312 is 21332354221.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45521514 + ... + 45521782.

It is an arithmetic number, because the mean of its divisors is an integer number (218708100).

Almost surely, 2^12245323312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12245323312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13122486000).

12245323312 is an abundant number, since it is smaller than the sum of its proper divisors (13999648688).

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

12245323312 is a wasteful number, since it uses less digits than its factorization.

12245323312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551 (or 516 counting only the distinct ones).

The product of its digits is 8640, while the sum is 28.

Adding to 12245323312 its reverse (21332354221), we get a palindrome (33577677533).

The spelling of 12245323312 in words is "twelve billion, two hundred forty-five million, three hundred twenty-three thousand, three hundred twelve".