12012587 has 4 divisors (see below), whose sum is σ = 12030240. Its totient is φ = 11994936.

The previous prime is 12012551. The next prime is 12012599. The reversal of 12012587 is 78521021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78521021 = 3209 ⋅24469.

It is a cyclic number.

It is not a de Polignac number, because 12012587 - 2⁸ = 12012331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12012527) 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 3 ways as a sum of consecutive naturals, for example, 7763 + ... + 9180.

It is an arithmetic number, because the mean of its divisors is an integer number (3007560).

Almost surely, 2^12012587 is an apocalyptic number.

12012587 is a deficient number, since it is larger than the sum of its proper divisors (17653).

12012587 is an equidigital number, since it uses as much as digits as its factorization.

12012587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17652.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 12012587 is about 3465.9179159351. The cubic root of 12012587 is about 229.0228678625.

The spelling of 12012587 in words is "twelve million, twelve thousand, five hundred eighty-seven".