12200211071221 has 2 divisors, whose sum is σ = 12200211071222. Its totient is φ = 12200211071220.

The previous prime is 12200211071149. The next prime is 12200211071273. The reversal of 12200211071221 is 12217011200221.

12200211071221 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., 9305483139121 + 2894727932100 = 3050489^2 + 1701390^2 .

It is a cyclic number.

It is not a de Polignac number, because 12200211071221 - 2⁹ = 12200211070709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12200211071192 and 12200211071201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12200211074221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100105535610 + 6100105535611.

It is an arithmetic number, because the mean of its divisors is an integer number (6100105535611).

Almost surely, 2^{12200211071221} is an apocalyptic number.

It is an amenable number.

12200211071221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12200211071221 is an equidigital number, since it uses as much as digits as its factorization.

12200211071221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 12200211071221 its reverse (12217011200221), we get a palindrome (24417222271442).

The spelling of 12200211071221 in words is "twelve trillion, two hundred billion, two hundred eleven million, seventy-one thousand, two hundred twenty-one".