123320445452123 has 4 divisors (see below), whose sum is σ = 123627977735448. Its totient is φ = 123012913168800.

The previous prime is 123320445452101. The next prime is 123320445452203. The reversal of 123320445452123 is 321254544023321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123320445452123 - 2⁶ = 123320445452059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123320445452923) 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, 153766141061 + ... + 153766141862.

It is an arithmetic number, because the mean of its divisors is an integer number (30906994433862).

Almost surely, 2^{123320445452123} is an apocalyptic number.

123320445452123 is a deficient number, since it is larger than the sum of its proper divisors (307532283325).

123320445452123 is an equidigital number, since it uses as much as digits as its factorization.

123320445452123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307532283324.

The product of its (nonzero) digits is 691200, while the sum is 41.

Adding to 123320445452123 its reverse (321254544023321), we get a palindrome (444574989475444).

The spelling of 123320445452123 in words is "one hundred twenty-three trillion, three hundred twenty billion, four hundred forty-five million, four hundred fifty-two thousand, one hundred twenty-three".