12018771 has 12 divisors (see below), whose sum is σ = 17445480. Its totient is φ = 7973280.

The previous prime is 12018749. The next prime is 12018817. The reversal of 12018771 is 17781021.

It is not a de Polignac number, because 12018771 - 2⁵ = 12018739 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12018271) 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 11 ways as a sum of consecutive naturals, for example, 1266 + ... + 5063.

It is an arithmetic number, because the mean of its divisors is an integer number (1453790).

Almost surely, 2^12018771 is an apocalyptic number.

12018771 is a deficient number, since it is larger than the sum of its proper divisors (5426709).

12018771 is a wasteful number, since it uses less digits than its factorization.

12018771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6546 (or 6543 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 27.

The square root of 12018771 is about 3466.8099169121. The cubic root of 12018771 is about 229.0621609377.

Adding to 12018771 its reverse (17781021), we get a palindrome (29799792).

The spelling of 12018771 in words is "twelve million, eighteen thousand, seven hundred seventy-one".