12122211322211 has 2 divisors, whose sum is σ = 12122211322212. Its totient is φ = 12122211322210.

The previous prime is 12122211322099. The next prime is 12122211322229. The reversal of 12122211322211 is 11222311222121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12122211322211 is a prime.

It is not a weakly prime, because it can be changed into another prime (12122211322231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061105661105 + 6061105661106.

It is an arithmetic number, because the mean of its divisors is an integer number (6061105661106).

Almost surely, 2^{12122211322211} is an apocalyptic number.

12122211322211 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122211322211 is an equidigital number, since it uses as much as digits as its factorization.

12122211322211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 384, while the sum is 23.

Adding to 12122211322211 its reverse (11222311222121), we get a palindrome (23344522544332).

The spelling of 12122211322211 in words is "twelve trillion, one hundred twenty-two billion, two hundred eleven million, three hundred twenty-two thousand, two hundred eleven".