3221312233 has 4 divisors (see below), whose sum is σ = 3228964228. Its totient is φ = 3213660240.

The previous prime is 3221312189. The next prime is 3221312243. The reversal of 3221312233 is 3322131223.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3322131223 = 11351 ⋅292673.

It can be written as a sum of positive squares in 2 ways, for example, as 10163344 + 3211148889 = 3188^2 + 56667^2 .

It is a cyclic number.

It is not a de Polignac number, because 3221312233 - 2²⁵ = 3187757801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3221312243) 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, 3825366 + ... + 3826207.

It is an arithmetic number, because the mean of its divisors is an integer number (807241057).

Almost surely, 2^3221312233 is an apocalyptic number.

It is an amenable number.

3221312233 is a deficient number, since it is larger than the sum of its proper divisors (7651995).

3221312233 is an equidigital number, since it uses as much as digits as its factorization.

3221312233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7651994.

The product of its digits is 1296, while the sum is 22.

The square root of 3221312233 is about 56756.6051926998. The cubic root of 3221312233 is about 1476.8768192352.

Adding to 3221312233 its reverse (3322131223), we get a palindrome (6543443456).

It can be divided in two parts, 322131223 and 3, that multiplied together give a palindrome (966393669).

The spelling of 3221312233 in words is "three billion, two hundred twenty-one million, three hundred twelve thousand, two hundred thirty-three".