12100111111 has 8 divisors (see below), whose sum is σ = 13423852800. Its totient is φ = 10813658040.

The previous prime is 12100111057. The next prime is 12100111129. The reversal of 12100111111 is 11111100121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12100111111 - 2⁷ = 12100110983 is a prime.

It is a Duffinian number.

12100111111 is a modest number, since divided by 111111 gives 12100 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100111151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9321471 + ... + 9322768.

It is an arithmetic number, because the mean of its divisors is an integer number (1677981600).

Almost surely, 2^12100111111 is an apocalyptic number.

12100111111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12100111111 is a deficient number, since it is larger than the sum of its proper divisors (1323741689).

12100111111 is a wasteful number, since it uses less digits than its factorization.

12100111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18644309.

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

Adding to 12100111111 its reverse (11111100121), we get a palindrome (23211211232).

The spelling of 12100111111 in words is "twelve billion, one hundred million, one hundred eleven thousand, one hundred eleven".