1323333312221 has 4 divisors (see below), whose sum is σ = 1401176448252. Its totient is φ = 1245490176192.

The previous prime is 1323333312211. The next prime is 1323333312229. The reversal of 1323333312221 is 1222133333231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 821948944996 + 501384367225 = 906614^2 + 708085^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323333312221 - 2¹⁰ = 1323333311197 is a prime.

It is a super-2 number, since 2×1323333312221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323333312229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38921567990 + ... + 38921568023.

It is an arithmetic number, because the mean of its divisors is an integer number (350294112063).

Almost surely, 2^{1323333312221} is an apocalyptic number.

It is an amenable number.

1323333312221 is a deficient number, since it is larger than the sum of its proper divisors (77843136031).

1323333312221 is an equidigital number, since it uses as much as digits as its factorization.

1323333312221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77843136030.

The product of its digits is 11664, while the sum is 29.

Adding to 1323333312221 its reverse (1222133333231), we get a palindrome (2545466645452).

The spelling of 1323333312221 in words is "one trillion, three hundred twenty-three billion, three hundred thirty-three million, three hundred twelve thousand, two hundred twenty-one".