1323231213121 has 8 divisors (see below), whose sum is σ = 1393215516000. Its totient is φ = 1253280965760.

The previous prime is 1323231213103. The next prime is 1323231213131. The reversal of 1323231213121 is 1213121323231.

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

It is a cyclic number.

It is not a de Polignac number, because 1323231213121 - 2¹⁵ = 1323231180353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323231213131) 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, 8434096 + ... + 8589553.

It is an arithmetic number, because the mean of its divisors is an integer number (174151939500).

Almost surely, 2^{1323231213121} is an apocalyptic number.

It is an amenable number.

1323231213121 is a deficient number, since it is larger than the sum of its proper divisors (69984302879).

1323231213121 is a wasteful number, since it uses less digits than its factorization.

1323231213121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17027759.

The product of its digits is 1296, while the sum is 25.

Adding to 1323231213121 its reverse (1213121323231), we get a palindrome (2536352536352).

The spelling of 1323231213121 in words is "one trillion, three hundred twenty-three billion, two hundred thirty-one million, two hundred thirteen thousand, one hundred twenty-one".