12102110111 has 36 divisors (see below), whose sum is σ = 15283501200. Its totient is φ = 9550614528.

The previous prime is 12102110099. The next prime is 12102110117. The reversal of 12102110111 is 11101120121.

It is not a de Polignac number, because 12102110111 - 2²² = 12097915807 is a prime.

It is a super-2 number, since 2×12102110111² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12102110092 and 12102110101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102110117) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3633695 + ... + 3637023.

It is an arithmetic number, because the mean of its divisors is an integer number (424541700).

Almost surely, 2^12102110111 is an apocalyptic number.

12102110111 is a deficient number, since it is larger than the sum of its proper divisors (3181391089).

12102110111 is a wasteful number, since it uses less digits than its factorization.

12102110111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3808 (or 3788 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 12102110111 its reverse (11101120121), we get a palindrome (23203230232).

The spelling of 12102110111 in words is "twelve billion, one hundred two million, one hundred ten thousand, one hundred eleven".