1323123221332 has 24 divisors (see below), whose sum is σ = 2567371740192. Its totient is φ = 591560306400.

The previous prime is 1323123221279. The next prime is 1323123221333. The reversal of 1323123221332 is 2331223213231.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1323123221332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323123221333) 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, 246480778 + ... + 246486145.

It is an arithmetic number, because the mean of its divisors is an integer number (106973822508).

Almost surely, 2^{1323123221332} is an apocalyptic number.

It is an amenable number.

1323123221332 is a deficient number, since it is larger than the sum of its proper divisors (1244248518860).

1323123221332 is a wasteful number, since it uses less digits than its factorization.

1323123221332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492966999 (or 492966997 counting only the distinct ones).

The product of its digits is 7776, while the sum is 28.

Adding to 1323123221332 its reverse (2331223213231), we get a palindrome (3654346434563).

The spelling of 1323123221332 in words is "one trillion, three hundred twenty-three billion, one hundred twenty-three million, two hundred twenty-one thousand, three hundred thirty-two".