13212233 has 4 divisors (see below), whose sum is σ = 13227648. Its totient is φ = 13196820.

The previous prime is 13212229. The next prime is 13212259. The reversal of 13212233 is 33221231.

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: 33221231 = 269 ⋅123499.

It is a cyclic number.

It is not a de Polignac number, because 13212233 - 2² = 13212229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13212263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6341 + ... + 8162.

It is an arithmetic number, because the mean of its divisors is an integer number (3306912).

Almost surely, 2^13212233 is an apocalyptic number.

It is an amenable number.

13212233 is a deficient number, since it is larger than the sum of its proper divisors (15415).

13212233 is an equidigital number, since it uses as much as digits as its factorization.

13212233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15414.

The product of its digits is 216, while the sum is 17.

The square root of 13212233 is about 3634.8635462697. The cubic root of 13212233 is about 236.4061342045.

Adding to 13212233 its reverse (33221231), we get a palindrome (46433464).

The spelling of 13212233 in words is "thirteen million, two hundred twelve thousand, two hundred thirty-three".