12242171 has 4 divisors (see below), whose sum is σ = 12304512. Its totient is φ = 12179832.

The previous prime is 12242161. The next prime is 12242177. The reversal of 12242171 is 17124221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17124221 = 1699 ⋅10079.

It is a cyclic number.

It is not a de Polignac number, because 12242171 - 2⁶ = 12242107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12242177) 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, 30875 + ... + 31268.

It is an arithmetic number, because the mean of its divisors is an integer number (3076128).

Almost surely, 2^12242171 is an apocalyptic number.

12242171 is a deficient number, since it is larger than the sum of its proper divisors (62341).

12242171 is an equidigital number, since it uses as much as digits as its factorization.

12242171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62340.

The product of its digits is 224, while the sum is 20.

The square root of 12242171 is about 3498.8813926740. The cubic root of 12242171 is about 230.4726951499.

Adding to 12242171 its reverse (17124221), we get a palindrome (29366392).

The spelling of 12242171 in words is "twelve million, two hundred forty-two thousand, one hundred seventy-one".