12012871 has 8 divisors (see below), whose sum is σ = 13212864. Its totient is φ = 10852320.

The previous prime is 12012859. The next prime is 12012881. The reversal of 12012871 is 17821021.

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 12012871 - 2⁷ = 12012743 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 (12012851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9220 + ... + 10441.

It is an arithmetic number, because the mean of its divisors is an integer number (1651608).

Almost surely, 2^12012871 is an apocalyptic number.

12012871 is a deficient number, since it is larger than the sum of its proper divisors (1199993).

12012871 is a wasteful number, since it uses less digits than its factorization.

12012871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19721.

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 12012871 is about 3465.9588860804. The cubic root of 12012871 is about 229.0246726911.

Adding to 12012871 its reverse (17821021), we get a palindrome (29833892).

The spelling of 12012871 in words is "twelve million, twelve thousand, eight hundred seventy-one".