12012243321 has 8 divisors (see below), whose sum is σ = 17248349440. Its totient is φ = 7392149712.

The previous prime is 12012243317. The next prime is 12012243337. The reversal of 12012243321 is 12334221021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12012243321 - 2² = 12012243317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12012243301) 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, 154003081 + ... + 154003158.

It is an arithmetic number, because the mean of its divisors is an integer number (2156043680).

Almost surely, 2^12012243321 is an apocalyptic number.

It is an amenable number.

12012243321 is a deficient number, since it is larger than the sum of its proper divisors (5236106119).

12012243321 is a wasteful number, since it uses less digits than its factorization.

12012243321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308006255.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 12012243321 its reverse (12334221021), we get a palindrome (24346464342).

The spelling of 12012243321 in words is "twelve billion, twelve million, two hundred forty-three thousand, three hundred twenty-one".