12101110111 has 16 divisors (see below), whose sum is σ = 12690000000. Its totient is φ = 11523972096.

The previous prime is 12101110039. The next prime is 12101110207. The reversal of 12101110111 is 11101110121.

It is a cyclic number.

It is not a de Polignac number, because 12101110111 - 2²⁵ = 12067555679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101117111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2859345 + ... + 2863573.

It is an arithmetic number, because the mean of its divisors is an integer number (793125000).

Almost surely, 2^12101110111 is an apocalyptic number.

12101110111 is a deficient number, since it is larger than the sum of its proper divisors (588889889).

12101110111 is a wasteful number, since it uses less digits than its factorization.

12101110111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5586.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 12101110111 its sum of digits (10), we get a palindrome (12101110121).

Adding to 12101110111 its reverse (11101110121), we get a palindrome (23202220232).

The spelling of 12101110111 in words is "twelve billion, one hundred one million, one hundred ten thousand, one hundred eleven".