12211011611 has 2 divisors, whose sum is σ = 12211011612. Its totient is φ = 12211011610.

The previous prime is 12211011601. The next prime is 12211011613. The reversal of 12211011611 is 11611011221.

12211011611 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 is an emirp because it is prime and its reverse (11611011221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12211011611 is a prime.

Together with 12211011613, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12211011611.

It is not a weakly prime, because it can be changed into another prime (12211011613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105505805 + 6105505806.

It is an arithmetic number, because the mean of its divisors is an integer number (6105505806).

Almost surely, 2^12211011611 is an apocalyptic number.

12211011611 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211011611 is an equidigital number, since it uses as much as digits as its factorization.

12211011611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 12211011611 its reverse (11611011221), we get a palindrome (23822022832).

The spelling of 12211011611 in words is "twelve billion, two hundred eleven million, eleven thousand, six hundred eleven".