12232161 has 16 divisors (see below), whose sum is σ = 18229120. Its totient is φ = 8106480.

The previous prime is 12232151. The next prime is 12232169. The reversal of 12232161 is 16123221.

It is not a de Polignac number, because 12232161 - 2¹⁵ = 12199393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12232169) 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 15 ways as a sum of consecutive naturals, for example, 3636 + ... + 6138.

It is an arithmetic number, because the mean of its divisors is an integer number (1139320).

Almost surely, 2^12232161 is an apocalyptic number.

It is an amenable number.

12232161 is a deficient number, since it is larger than the sum of its proper divisors (5996959).

12232161 is a wasteful number, since it uses less digits than its factorization.

12232161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2693 (or 2687 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 12232161 is about 3497.4506429684. The cubic root of 12232161 is about 230.4098615028.

Adding to 12232161 its reverse (16123221), we get a palindrome (28355382).

The spelling of 12232161 in words is "twelve million, two hundred thirty-two thousand, one hundred sixty-one".