1323002221121 has 6 divisors (see below), whose sum is σ = 1539002583810. Its totient is φ = 1134001903776.

The previous prime is 1323002221109. The next prime is 1323002221157. The reversal of 1323002221121 is 1211222003231.

It can be written as a sum of positive squares in only one way, i.e., 762504436225 + 560497784896 = 873215^2 + 748664^2 .

It is not a de Polignac number, because 1323002221121 - 2³⁸ = 1048124314177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1323002221093 and 1323002221102.

It is not an unprimeable number, because it can be changed into a prime (1323002221421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13500022616 + ... + 13500022713.

It is an arithmetic number, because the mean of its divisors is an integer number (256500430635).

Almost surely, 2^{1323002221121} is an apocalyptic number.

It is an amenable number.

1323002221121 is a deficient number, since it is larger than the sum of its proper divisors (216000362689).

1323002221121 is an equidigital number, since it uses as much as digits as its factorization.

1323002221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27000045343 (or 27000045336 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1323002221121 its reverse (1211222003231), we get a palindrome (2534224224352).

The spelling of 1323002221121 in words is "one trillion, three hundred twenty-three billion, two million, two hundred twenty-one thousand, one hundred twenty-one".