12089171 has 4 divisors (see below), whose sum is σ = 12156144. Its totient is φ = 12022200.

The previous prime is 12089131. The next prime is 12089173. The reversal of 12089171 is 17198021.

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

It is a cyclic number.

It is not a de Polignac number, because 12089171 - 2¹⁰ = 12088147 is a prime.

It is a super-2 number, since 2×12089171² = 292296110934482, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12089173) 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, 33215 + ... + 33576.

It is an arithmetic number, because the mean of its divisors is an integer number (3039036).

Almost surely, 2^12089171 is an apocalyptic number.

12089171 is a deficient number, since it is larger than the sum of its proper divisors (66973).

12089171 is an equidigital number, since it uses as much as digits as its factorization.

12089171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66972.

The product of its (nonzero) digits is 1008, while the sum is 29.

The square root of 12089171 is about 3476.9485184570. The cubic root of 12089171 is about 229.5085347032.

The spelling of 12089171 in words is "twelve million, eighty-nine thousand, one hundred seventy-one".