12221111110111 has 2 divisors, whose sum is σ = 12221111110112. Its totient is φ = 12221111110110.

The previous prime is 12221111110037. The next prime is 12221111110129. The reversal of 12221111110111 is 11101111112221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12221111110111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12221111110511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110555555055 + 6110555555056.

It is an arithmetic number, because the mean of its divisors is an integer number (6110555555056).

Almost surely, 2^{12221111110111} is an apocalyptic number.

12221111110111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221111110111 is an equidigital number, since it uses as much as digits as its factorization.

12221111110111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 12221111110111 its reverse (11101111112221), we get a palindrome (23322222222332).

The spelling of 12221111110111 in words is "twelve trillion, two hundred twenty-one billion, one hundred eleven million, one hundred ten thousand, one hundred eleven".