1211341211 has 2 divisors, whose sum is σ = 1211341212. Its totient is φ = 1211341210.

The previous prime is 1211341189. The next prime is 1211341217. The reversal of 1211341211 is 1121431121.

It is a strong prime.

It is an emirp because it is prime and its reverse (1121431121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1211341211 - 2¹⁰ = 1211340187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1211341211.

It is not a weakly prime, because it can be changed into another prime (1211341217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605670605 + 605670606.

It is an arithmetic number, because the mean of its divisors is an integer number (605670606).

Almost surely, 2^1211341211 is an apocalyptic number.

1211341211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211341211 is an equidigital number, since it uses as much as digits as its factorization.

1211341211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48, while the sum is 17.

The square root of 1211341211 is about 34804.3274751862. The cubic root of 1211341211 is about 1065.9958096887.

Adding to 1211341211 its reverse (1121431121), we get a palindrome (2332772332).

The spelling of 1211341211 in words is "one billion, two hundred eleven million, three hundred forty-one thousand, two hundred eleven".