12211210221211 has 2 divisors, whose sum is σ = 12211210221212. Its totient is φ = 12211210221210.

The previous prime is 12211210221173. The next prime is 12211210221229. The reversal of 12211210221211 is 11212201211221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12211210221211 - 2¹⁹ = 12211209696923 is a prime.

It is a super-2 number, since 2×12211210221211² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12211210231211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105605110605 + 6105605110606.

It is an arithmetic number, because the mean of its divisors is an integer number (6105605110606).

Almost surely, 2^{12211210221211} is an apocalyptic number.

12211210221211 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211210221211 is an equidigital number, since it uses as much as digits as its factorization.

12211210221211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12211210221211 its reverse (11212201211221), we get a palindrome (23423411432432).

The spelling of 12211210221211 in words is "twelve trillion, two hundred eleven billion, two hundred ten million, two hundred twenty-one thousand, two hundred eleven".