12221044111 has 2 divisors, whose sum is σ = 12221044112. Its totient is φ = 12221044110.

The previous prime is 12221044091. The next prime is 12221044123. The reversal of 12221044111 is 11144012221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12221044111 - 2⁵ = 12221044079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12221044151) 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, 6110522055 + 6110522056.

It is an arithmetic number, because the mean of its divisors is an integer number (6110522056).

Almost surely, 2^12221044111 is an apocalyptic number.

12221044111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221044111 is an equidigital number, since it uses as much as digits as its factorization.

12221044111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12221044111 its reverse (11144012221), we get a palindrome (23365056332).

The spelling of 12221044111 in words is "twelve billion, two hundred twenty-one million, forty-four thousand, one hundred eleven".