12022987 has 4 divisors (see below), whose sum is σ = 12038320. Its totient is φ = 12007656.

The previous prime is 12022979. The next prime is 12023003. The reversal of 12022987 is 78922021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78922021 = 29 ⋅2721449.

It is a cyclic number.

It is not a de Polignac number, because 12022987 - 2³ = 12022979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12022937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6423 + ... + 8080.

It is an arithmetic number, because the mean of its divisors is an integer number (3009580).

Almost surely, 2^12022987 is an apocalyptic number.

12022987 is a deficient number, since it is larger than the sum of its proper divisors (15333).

12022987 is an equidigital number, since it uses as much as digits as its factorization.

12022987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15332.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 12022987 is about 3467.4179153947. The cubic root of 12022987 is about 229.0889416341.

The spelling of 12022987 in words is "twelve million, twenty-two thousand, nine hundred eighty-seven".