12181282 has 8 divisors (see below), whose sum is σ = 19346796. Its totient is φ = 5732352.

The previous prime is 12181271. The next prime is 12181289. The reversal of 12181282 is 28218121.

It can be written as a sum of positive squares in 2 ways, for example, as 12103441 + 77841 = 3479^2 + 279^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12181289) 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, 179103 + ... + 179170.

Almost surely, 2^12181282 is an apocalyptic number.

12181282 is a deficient number, since it is larger than the sum of its proper divisors (7165514).

12181282 is a wasteful number, since it uses less digits than its factorization.

12181282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358292.

The product of its digits is 512, while the sum is 25.

The square root of 12181282 is about 3490.1693368660. The cubic root of 12181282 is about 230.0899585093.

It can be divided in two parts, 1218 and 1282, that added together give a square (2500 = 50²).

The spelling of 12181282 in words is "twelve million, one hundred eighty-one thousand, two hundred eighty-two".