1323123303221 has 8 divisors (see below), whose sum is σ = 1352805227904. Its totient is φ = 1293505143840.

The previous prime is 1323123303217. The next prime is 1323123303247. The reversal of 1323123303221 is 1223033213231.

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 1323123303221 - 2² = 1323123303217 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 (1323123303251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15899360 + ... + 15982361.

It is an arithmetic number, because the mean of its divisors is an integer number (169100653488).

Almost surely, 2^{1323123303221} is an apocalyptic number.

It is an amenable number.

1323123303221 is a deficient number, since it is larger than the sum of its proper divisors (29681924683).

1323123303221 is an equidigital number, since it uses as much as digits as its factorization.

1323123303221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31882651.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 1323123303221 its reverse (1223033213231), we get a palindrome (2546156516452).

The spelling of 1323123303221 in words is "one trillion, three hundred twenty-three billion, one hundred twenty-three million, three hundred three thousand, two hundred twenty-one".