13123120321003 has 12 divisors (see below), whose sum is σ = 16485242057200. Its totient is φ = 10225808041680.

The previous prime is 13123120320929. The next prime is 13123120321007. The reversal of 13123120321003 is 30012302132131.

It is not a de Polignac number, because 13123120321003 - 2²⁵ = 13123086766571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13123120321007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7746823428 + ... + 7746825121.

Almost surely, 2^{13123120321003} is an apocalyptic number.

13123120321003 is a deficient number, since it is larger than the sum of its proper divisors (3362121736197).

13123120321003 is a wasteful number, since it uses less digits than its factorization.

13123120321003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15493648578 (or 15493648567 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 13123120321003 its reverse (30012302132131), we get a palindrome (43135422453134).

The spelling of 13123120321003 in words is "thirteen trillion, one hundred twenty-three billion, one hundred twenty million, three hundred twenty-one thousand, three".