1333321321 has 4 divisors (see below), whose sum is σ = 1334930500. Its totient is φ = 1331712144.

The previous prime is 1333321289. The next prime is 1333321331. The reversal of 1333321321 is 1231233331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1231233331 = 6217 ⋅198043.

It can be written as a sum of positive squares in 2 ways, for example, as 257153296 + 1076168025 = 16036^2 + 32805^2 .

It is a cyclic number.

It is not a de Polignac number, because 1333321321 - 2⁵ = 1333321289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1333321292 and 1333321301.

It is not an unprimeable number, because it can be changed into a prime (1333321331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 803346 + ... + 805003.

It is an arithmetic number, because the mean of its divisors is an integer number (333732625).

Almost surely, 2^1333321321 is an apocalyptic number.

It is an amenable number.

1333321321 is a deficient number, since it is larger than the sum of its proper divisors (1609179).

1333321321 is an equidigital number, since it uses as much as digits as its factorization.

1333321321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609178.

The product of its digits is 972, while the sum is 22.

The square root of 1333321321 is about 36514.6726809922. The cubic root of 1333321321 is about 1100.6391109674.

Adding to 1333321321 its reverse (1231233331), we get a palindrome (2564554652).

The spelling of 1333321321 in words is "one billion, three hundred thirty-three million, three hundred twenty-one thousand, three hundred twenty-one".