12112220222111 has 2 divisors, whose sum is σ = 12112220222112. Its totient is φ = 12112220222110.

The previous prime is 12112220222059. The next prime is 12112220222117. The reversal of 12112220222111 is 11122202221121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12112220222111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12112220222117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6056110111055 + 6056110111056.

It is an arithmetic number, because the mean of its divisors is an integer number (6056110111056).

Almost surely, 2^{12112220222111} is an apocalyptic number.

12112220222111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12112220222111 is an equidigital number, since it uses as much as digits as its factorization.

12112220222111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12112220222111 its reverse (11122202221121), we get a palindrome (23234422443232).

It can be divided in two parts, 1 and 2112220222111, that added together give a palindrome (2112220222112).

The spelling of 12112220222111 in words is "twelve trillion, one hundred twelve billion, two hundred twenty million, two hundred twenty-two thousand, one hundred eleven".