1323120103121 has 4 divisors (see below), whose sum is σ = 1324572486144. Its totient is φ = 1321667720100.

The previous prime is 1323120103051. The next prime is 1323120103127. The reversal of 1323120103121 is 1213010213231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1323120103121 - 2¹⁴ = 1323120086737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1323120103093 and 1323120103102.

It is not an unprimeable number, because it can be changed into a prime (1323120103127) 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, 726190145 + ... + 726191966.

It is an arithmetic number, because the mean of its divisors is an integer number (331143121536).

Almost surely, 2^{1323120103121} is an apocalyptic number.

It is an amenable number.

1323120103121 is a deficient number, since it is larger than the sum of its proper divisors (1452383023).

1323120103121 is an equidigital number, since it uses as much as digits as its factorization.

1323120103121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452383022.

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

Adding to 1323120103121 its reverse (1213010213231), we get a palindrome (2536130316352).

It can be divided in two parts, 1323120 and 103121, that added together give a palindrome (1426241).

The spelling of 1323120103121 in words is "one trillion, three hundred twenty-three billion, one hundred twenty million, one hundred three thousand, one hundred twenty-one".