1321332033 has 8 divisors (see below), whose sum is σ = 2013458368. Its totient is φ = 755046864.

The previous prime is 1321332013. The next prime is 1321332043. The reversal of 1321332033 is 3302331231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1321332033 - 2⁸ = 1321331777 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 62920573 = 1321332033 / (1 + 3 + 2 + 1 + 3 + 3 + 2 + 0 + 3 + 3).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1321332013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31460266 + ... + 31460307.

It is an arithmetic number, because the mean of its divisors is an integer number (251682296).

Almost surely, 2^1321332033 is an apocalyptic number.

It is an amenable number.

1321332033 is a deficient number, since it is larger than the sum of its proper divisors (692126335).

1321332033 is an equidigital number, since it uses as much as digits as its factorization.

1321332033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62920583.

The product of its (nonzero) digits is 972, while the sum is 21.

The square root of 1321332033 is about 36350.1311276865. The cubic root of 1321332033 is about 1097.3301734759.

Adding to 1321332033 its reverse (3302331231), we get a palindrome (4623663264).

The spelling of 1321332033 in words is "one billion, three hundred twenty-one million, three hundred thirty-two thousand, thirty-three".