12011671 has 8 divisors (see below), whose sum is σ = 13752224. Its totient is φ = 10277280.

The previous prime is 12011669. The next prime is 12011683. The reversal of 12011671 is 17611021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12011671 - 2¹ = 12011669 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 (12011611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3961 + ... + 6301.

It is an arithmetic number, because the mean of its divisors is an integer number (1719028).

Almost surely, 2^12011671 is an apocalyptic number.

12011671 is a deficient number, since it is larger than the sum of its proper divisors (1740553).

12011671 is an equidigital number, since it uses as much as digits as its factorization.

12011671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3081.

The product of its (nonzero) digits is 84, while the sum is 19.

The square root of 12011671 is about 3465.7857694901. The cubic root of 12011671 is about 229.0170464609.

Adding to 12011671 its reverse (17611021), we get a palindrome (29622692).

The spelling of 12011671 in words is "twelve million, eleven thousand, six hundred seventy-one".