12027181 has 8 divisors (see below), whose sum is σ = 12228984. Its totient is φ = 11827200.

The previous prime is 12027179. The next prime is 12027271. The reversal of 12027181 is 18172021.

It can be written as a sum of positive squares in 4 ways, for example, as 697225 + 11329956 = 835^2 + 3366^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12027181 - 2¹ = 12027179 is a prime.

It is a super-2 number, since 2×12027181² = 289306165613522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12027151) 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 7 ways as a sum of consecutive naturals, for example, 19185 + ... + 19801.

It is an arithmetic number, because the mean of its divisors is an integer number (1528623).

Almost surely, 2^12027181 is an apocalyptic number.

It is an amenable number.

12027181 is a deficient number, since it is larger than the sum of its proper divisors (201803).

12027181 is a wasteful number, since it uses less digits than its factorization.

12027181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911.

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 12027181 is about 3468.0226354509. The cubic root of 12027181 is about 229.1155763721.

The spelling of 12027181 in words is "twelve million, twenty-seven thousand, one hundred eighty-one".