12112211101111 has 6 divisors (see below), whose sum is σ = 13313422119536. Its totient is φ = 11011101000900.

The previous prime is 12112211101079. The next prime is 12112211101157. The reversal of 12112211101111 is 11110111221121.

It is not a de Polignac number, because 12112211101111 - 2⁵ = 12112211101079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112211101171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50050458975 + ... + 50050459216.

Almost surely, 2^{12112211101111} is an apocalyptic number.

12112211101111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12112211101111 is a deficient number, since it is larger than the sum of its proper divisors (1201211018425).

12112211101111 is a wasteful number, since it uses less digits than its factorization.

12112211101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100100918213 (or 100100918202 counting only the distinct ones).

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

Adding to 12112211101111 its reverse (11110111221121), we get a palindrome (23222322322232).

The spelling of 12112211101111 in words is "twelve trillion, one hundred twelve billion, two hundred eleven million, one hundred one thousand, one hundred eleven".