12012987 has 24 divisors (see below), whose sum is σ = 18911232. Its totient is φ = 6762000.

The previous prime is 12012971. The next prime is 12013009. The reversal of 12012987 is 78921021.

It is not a de Polignac number, because 12012987 - 2⁴ = 12012971 is a prime.

12012987 is a modest number, since divided by 12987 gives 12 as remainder.

It is not an unprimeable number, because it can be changed into a prime (12012907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9862 + ... + 11012.

It is an arithmetic number, because the mean of its divisors is an integer number (787968).

Almost surely, 2^12012987 is an apocalyptic number.

12012987 is a deficient number, since it is larger than the sum of its proper divisors (6898245).

12012987 is a wasteful number, since it uses less digits than its factorization.

12012987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239 (or 1232 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 12012987 is about 3465.9756202259. The cubic root of 12012987 is about 229.0254098664.

The spelling of 12012987 in words is "twelve million, twelve thousand, nine hundred eighty-seven".