212211122611 has 2 divisors, whose sum is σ = 212211122612. Its totient is φ = 212211122610.

The previous prime is 212211122603. The next prime is 212211122647. The reversal of 212211122611 is 116221112212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212211122611 - 2³ = 212211122603 is a prime.

It is not a weakly prime, because it can be changed into another prime (212211122671) 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, 106105561305 + 106105561306.

It is an arithmetic number, because the mean of its divisors is an integer number (106105561306).

Almost surely, 2^212211122611 is an apocalyptic number.

212211122611 is a deficient number, since it is larger than the sum of its proper divisors (1).

212211122611 is an equidigital number, since it uses as much as digits as its factorization.

212211122611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 22.

Adding to 212211122611 its reverse (116221112212), we get a palindrome (328432234823).

The spelling of 212211122611 in words is "two hundred twelve billion, two hundred eleven million, one hundred twenty-two thousand, six hundred eleven".