12101111110111 has 4 divisors (see below), whose sum is σ = 12627246375792. Its totient is φ = 11574975844432.

The previous prime is 12101111110057. The next prime is 12101111110129. The reversal of 12101111110111 is 11101111110121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12101111110111 - 2⁹ = 12101111109599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12101111110091 and 12101111110100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101111110141) 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 in 3 ways as a sum of consecutive naturals, for example, 263067632806 + ... + 263067632851.

It is an arithmetic number, because the mean of its divisors is an integer number (3156811593948).

Almost surely, 2^{12101111110111} is an apocalyptic number.

12101111110111 is a deficient number, since it is larger than the sum of its proper divisors (526135265681).

12101111110111 is an equidigital number, since it uses as much as digits as its factorization.

12101111110111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526135265680.

The product of its (nonzero) digits is 2, while the sum is 13.

Adding to 12101111110111 its reverse (11101111110121), we get a palindrome (23202222220232).

The spelling of 12101111110111 in words is "twelve trillion, one hundred one billion, one hundred eleven million, one hundred ten thousand, one hundred eleven".