12031222321 has 8 divisors (see below), whose sum is σ = 12097837664. Its totient is φ = 11964697920.

The previous prime is 12031222277. The next prime is 12031222331. The reversal of 12031222321 is 12322213021.

12031222321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12031222321 - 2⁷ = 12031222193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12031222331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251686 + ... + 295648.

It is an arithmetic number, because the mean of its divisors is an integer number (1512229708).

Almost surely, 2^12031222321 is an apocalyptic number.

It is an amenable number.

12031222321 is a deficient number, since it is larger than the sum of its proper divisors (66615343).

12031222321 is a wasteful number, since it uses less digits than its factorization.

12031222321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45471.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12031222321 its reverse (12322213021), we get a palindrome (24353435342).

The spelling of 12031222321 in words is "twelve billion, thirty-one million, two hundred twenty-two thousand, three hundred twenty-one".