12000333221 has 2 divisors, whose sum is σ = 12000333222. Its totient is φ = 12000333220.

The previous prime is 12000333181. The next prime is 12000333227. The reversal of 12000333221 is 12233300021.

12000333221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8561800900 + 3438532321 = 92530^2 + 58639^2 .

It is a cyclic number.

It is not a de Polignac number, because 12000333221 - 2⁶ = 12000333157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12000333221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12000333227) 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 as a sum of consecutive naturals, namely, 6000166610 + 6000166611.

It is an arithmetic number, because the mean of its divisors is an integer number (6000166611).

Almost surely, 2^12000333221 is an apocalyptic number.

It is an amenable number.

12000333221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12000333221 is an equidigital number, since it uses as much as digits as its factorization.

12000333221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 12000333221 its reverse (12233300021), we get a palindrome (24233633242).

The spelling of 12000333221 in words is "twelve billion, three hundred thirty-three thousand, two hundred twenty-one".