1323100112321 has 4 divisors (see below), whose sum is σ = 1424877044052. Its totient is φ = 1221323180592.

The previous prime is 1323100112237. The next prime is 1323100112353. The reversal of 1323100112321 is 1232110013231.

It is a happy number.

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 343910700721 + 979189411600 = 586439^2 + 989540^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1323100112321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1323100112293 and 1323100112302.

It is not an unprimeable number, because it can be changed into a prime (1323100112921) 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, 50888465846 + ... + 50888465871.

It is an arithmetic number, because the mean of its divisors is an integer number (356219261013).

Almost surely, 2^{1323100112321} is an apocalyptic number.

It is an amenable number.

1323100112321 is a deficient number, since it is larger than the sum of its proper divisors (101776931731).

1323100112321 is a wasteful number, since it uses less digits than its factorization.

1323100112321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101776931730.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1323100112321 its reverse (1232110013231), we get a palindrome (2555210125552).

The spelling of 1323100112321 in words is "one trillion, three hundred twenty-three billion, one hundred million, one hundred twelve thousand, three hundred twenty-one".