12171412 has 12 divisors (see below), whose sum is σ = 23236416. Its totient is φ = 5532440.

The previous prime is 12171389. The next prime is 12171413. The reversal of 12171412 is 21417121.

12171412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12171412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12171413) 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, 138268 + ... + 138355.

It is an arithmetic number, because the mean of its divisors is an integer number (1936368).

Almost surely, 2^12171412 is an apocalyptic number.

It is an amenable number.

12171412 is a deficient number, since it is larger than the sum of its proper divisors (11065004).

12171412 is a wasteful number, since it uses less digits than its factorization.

12171412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276638 (or 276636 counting only the distinct ones).

The product of its digits is 112, while the sum is 19.

The square root of 12171412 is about 3488.7550788211. The cubic root of 12171412 is about 230.0277975225.

Adding to 12171412 its reverse (21417121), we get a palindrome (33588533).

The spelling of 12171412 in words is "twelve million, one hundred seventy-one thousand, four hundred twelve".