12182384261 has 4 divisors (see below), whose sum is σ = 12823562400. Its totient is φ = 11541206124.

The previous prime is 12182384233. The next prime is 12182384311. The reversal of 12182384261 is 16248328121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16248328121 = 283 ⋅57414587.

It is a cyclic number.

It is not a de Polignac number, because 12182384261 - 2²⁶ = 12115275397 is a prime.

It is a super-2 number, since 2×12182384261² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12182384231) 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, 320589041 + ... + 320589078.

It is an arithmetic number, because the mean of its divisors is an integer number (3205890600).

Almost surely, 2^12182384261 is an apocalyptic number.

It is an amenable number.

12182384261 is a deficient number, since it is larger than the sum of its proper divisors (641178139).

12182384261 is an equidigital number, since it uses as much as digits as its factorization.

12182384261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641178138.

The product of its digits is 36864, while the sum is 38.

The spelling of 12182384261 in words is "twelve billion, one hundred eighty-two million, three hundred eighty-four thousand, two hundred sixty-one".