12013030203221 has 2 divisors, whose sum is σ = 12013030203222. Its totient is φ = 12013030203220.

The previous prime is 12013030203151. The next prime is 12013030203259. The reversal of 12013030203221 is 12230203031021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10969251264196 + 1043778939025 = 3311986^2 + 1021655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12013030203221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12013030203193 and 12013030203202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12013030203521) 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, 6006515101610 + 6006515101611.

It is an arithmetic number, because the mean of its divisors is an integer number (6006515101611).

Almost surely, 2^{12013030203221} is an apocalyptic number.

It is an amenable number.

12013030203221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12013030203221 is an equidigital number, since it uses as much as digits as its factorization.

12013030203221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12013030203221 its reverse (12230203031021), we get a palindrome (24243233234242).

The spelling of 12013030203221 in words is "twelve trillion, thirteen billion, thirty million, two hundred three thousand, two hundred twenty-one".