12232291 has 4 divisors (see below), whose sum is σ = 12379752. Its totient is φ = 12084832.

The previous prime is 12232289. The next prime is 12232327. The reversal of 12232291 is 19223221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12232291 - 2¹ = 12232289 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12232201) 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 3 ways as a sum of consecutive naturals, for example, 73606 + ... + 73771.

It is an arithmetic number, because the mean of its divisors is an integer number (3094938).

Almost surely, 2^12232291 is an apocalyptic number.

12232291 is a deficient number, since it is larger than the sum of its proper divisors (147461).

12232291 is an equidigital number, since it uses as much as digits as its factorization.

12232291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147460.

The product of its digits is 432, while the sum is 22.

The square root of 12232291 is about 3497.4692278846. The cubic root of 12232291 is about 230.4106777439.

The spelling of 12232291 in words is "twelve million, two hundred thirty-two thousand, two hundred ninety-one".