12105771 has 16 divisors (see below), whose sum is σ = 16693248. Its totient is φ = 7797600.

The previous prime is 12105757. The next prime is 12105781. The reversal of 12105771 is 17750121.

It is a happy number.

12105771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12105771 - 2⁵ = 12105739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12105781) 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, 20916 + ... + 21486.

It is an arithmetic number, because the mean of its divisors is an integer number (1043328).

Almost surely, 2^12105771 is an apocalyptic number.

12105771 is a deficient number, since it is larger than the sum of its proper divisors (4587477).

12105771 is a wasteful number, since it uses less digits than its factorization.

12105771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802.

The product of its (nonzero) digits is 490, while the sum is 24.

The square root of 12105771 is about 3479.3348502264. The cubic root of 12105771 is about 229.6135349882.

Adding to 12105771 its reverse (17750121), we get a palindrome (29855892).

The spelling of 12105771 in words is "twelve million, one hundred five thousand, seven hundred seventy-one".