13320203123 has 4 divisors (see below), whose sum is σ = 13645086168. Its totient is φ = 12995320080.

The previous prime is 13320203107. The next prime is 13320203129. The reversal of 13320203123 is 32130202331.

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 13320203123 - 2⁴ = 13320203107 is a prime.

It is a super-2 number, since 2×13320203123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13320203095 and 13320203104.

It is not an unprimeable number, because it can be changed into a prime (13320203129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162441461 + ... + 162441542.

It is an arithmetic number, because the mean of its divisors is an integer number (3411271542).

Almost surely, 2^13320203123 is an apocalyptic number.

13320203123 is a deficient number, since it is larger than the sum of its proper divisors (324883045).

13320203123 is an equidigital number, since it uses as much as digits as its factorization.

13320203123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324883044.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 13320203123 its reverse (32130202331), we get a palindrome (45450405454).

The spelling of 13320203123 in words is "thirteen billion, three hundred twenty million, two hundred three thousand, one hundred twenty-three".