1321222333 has 4 divisors (see below), whose sum is σ = 1321311420. Its totient is φ = 1321133248.

The previous prime is 1321222321. The next prime is 1321222349. The reversal of 1321222333 is 3332221231.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3332221231 = 43 ⋅77493517.

It can be written as a sum of positive squares in 2 ways, for example, as 1244537284 + 76685049 = 35278^2 + 8757^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321222333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321222313) 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, 16348 + ... + 53941.

It is an arithmetic number, because the mean of its divisors is an integer number (330327855).

Almost surely, 2^1321222333 is an apocalyptic number.

It is an amenable number.

1321222333 is a deficient number, since it is larger than the sum of its proper divisors (89087).

1321222333 is an equidigital number, since it uses as much as digits as its factorization.

1321222333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89086.

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

The square root of 1321222333 is about 36348.6221609568. The cubic root of 1321222333 is about 1097.2998050172.

Adding to 1321222333 its reverse (3332221231), we get a palindrome (4653443564).

The spelling of 1321222333 in words is "one billion, three hundred twenty-one million, two hundred twenty-two thousand, three hundred thirty-three".