12211121210011 has 2 divisors, whose sum is σ = 12211121210012. Its totient is φ = 12211121210010.

The previous prime is 12211121209979. The next prime is 12211121210027. The reversal of 12211121210011 is 11001212111221.

It is an a-pointer prime, because the next prime (12211121210027) can be obtained adding 12211121210011 to its sum of digits (16).

It is a strong prime.

It is an emirp because it is prime and its reverse (11001212111221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12211121210011 - 2⁵ = 12211121209979 is a prime.

It is a super-2 number, since 2×12211121210011² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12211121210051) 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, 6105560605005 + 6105560605006.

It is an arithmetic number, because the mean of its divisors is an integer number (6105560605006).

Almost surely, 2^{12211121210011} is an apocalyptic number.

12211121210011 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211121210011 is an equidigital number, since it uses as much as digits as its factorization.

12211121210011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 12211121210011 its reverse (11001212111221), we get a palindrome (23212333321232).

The spelling of 12211121210011 in words is "twelve trillion, two hundred eleven billion, one hundred twenty-one million, two hundred ten thousand, eleven".