12210587 has 4 divisors (see below), whose sum is σ = 12225600. Its totient is φ = 12195576.

The previous prime is 12210577. The next prime is 12210589. The reversal of 12210587 is 78501221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78501221 = 71 ⋅1105651.

It is a cyclic number.

It is not a de Polignac number, because 12210587 - 2¹⁰ = 12209563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12210589) 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, 6212 + ... + 7937.

It is an arithmetic number, because the mean of its divisors is an integer number (3056400).

Almost surely, 2^12210587 is an apocalyptic number.

12210587 is a deficient number, since it is larger than the sum of its proper divisors (15013).

12210587 is an equidigital number, since it uses as much as digits as its factorization.

12210587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15012.

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

The square root of 12210587 is about 3494.3650353104. The cubic root of 12210587 is about 230.2743229661.

The spelling of 12210587 in words is "twelve million, two hundred ten thousand, five hundred eighty-seven".