12102112111 has 8 divisors (see below), whose sum is σ = 12775574000. Its totient is φ = 11432301120.

The previous prime is 12102112069. The next prime is 12102112151. The reversal of 12102112111 is 11121120121.

It is a happy number.

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 12102112111 - 2¹¹ = 12102110063 is a prime.

It is a super-2 number, since 2×12102112111² (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 = 12102112091 and 12102112100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102112151) 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, 905910 + ... + 919171.

It is an arithmetic number, because the mean of its divisors is an integer number (1596946750).

Almost surely, 2^12102112111 is an apocalyptic number.

12102112111 is a deficient number, since it is larger than the sum of its proper divisors (673461889).

12102112111 is a wasteful number, since it uses less digits than its factorization.

12102112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1825449.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12102112111 its reverse (11121120121), we get a palindrome (23223232232).

The spelling of 12102112111 in words is "twelve billion, one hundred two million, one hundred twelve thousand, one hundred eleven".