12222222222211 has 2 divisors, whose sum is σ = 12222222222212. Its totient is φ = 12222222222210.

The previous prime is 12222222222187. The next prime is 12222222222251. The reversal of 12222222222211 is 11222222222221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12222222222211 - 2¹¹ = 12222222220163 is a prime.

It is not a weakly prime, because it can be changed into another prime (12222222222251) 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, 6111111111105 + 6111111111106.

It is an arithmetic number, because the mean of its divisors is an integer number (6111111111106).

Almost surely, 2^{12222222222211} is an apocalyptic number.

12222222222211 is a deficient number, since it is larger than the sum of its proper divisors (1).

12222222222211 is an equidigital number, since it uses as much as digits as its factorization.

12222222222211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2048, while the sum is 25.

Adding to 12222222222211 its reverse (11222222222221), we get a palindrome (23444444444432).

The spelling of 12222222222211 in words is "twelve trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred eleven".