12012222000221 has 2 divisors, whose sum is σ = 12012222000222. Its totient is φ = 12012222000220.

The previous prime is 12012222000209. The next prime is 12012222000269. The reversal of 12012222000221 is 12200022221021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9198718977721 + 2813503022500 = 3032939^2 + 1677350^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12012222000221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12012222000221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12012222000281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006111000110 + 6006111000111.

It is an arithmetic number, because the mean of its divisors is an integer number (6006111000111).

Almost surely, 2^{12012222000221} is an apocalyptic number.

It is an amenable number.

12012222000221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12012222000221 is an equidigital number, since it uses as much as digits as its factorization.

12012222000221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12012222000221 its reverse (12200022221021), we get a palindrome (24212244221242).

The spelling of 12012222000221 in words is "twelve trillion, twelve billion, two hundred twenty-two million, two hundred twenty-one", and thus it is an aban number.