12105235111 has 4 divisors (see below), whose sum is σ = 12111174000. Its totient is φ = 12099296224.

The previous prime is 12105235049. The next prime is 12105235193. The reversal of 12105235111 is 11153250121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12105235111 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 (12105235211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2966386 + ... + 2970463.

It is an arithmetic number, because the mean of its divisors is an integer number (3027793500).

Almost surely, 2^12105235111 is an apocalyptic number.

12105235111 is a deficient number, since it is larger than the sum of its proper divisors (5938889).

12105235111 is an equidigital number, since it uses as much as digits as its factorization.

12105235111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5938888.

The product of its (nonzero) digits is 300, while the sum is 22.

Adding to 12105235111 its reverse (11153250121), we get a palindrome (23258485232).

The spelling of 12105235111 in words is "twelve billion, one hundred five million, two hundred thirty-five thousand, one hundred eleven".