13003121123 has 4 divisors (see below), whose sum is σ = 13451504640. Its totient is φ = 12554737608.

The previous prime is 13003121119. The next prime is 13003121189. The reversal of 13003121123 is 32112130031.

13003121123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32112130031 = 5113 ⋅6280487.

It is a cyclic number.

It is not a de Polignac number, because 13003121123 - 2² = 13003121119 is a prime.

It is a super-2 number, since 2×13003121123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13003111123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224191715 + ... + 224191772.

It is an arithmetic number, because the mean of its divisors is an integer number (3362876160).

Almost surely, 2^13003121123 is an apocalyptic number.

13003121123 is a deficient number, since it is larger than the sum of its proper divisors (448383517).

13003121123 is an equidigital number, since it uses as much as digits as its factorization.

13003121123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448383516.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 13003121123 its reverse (32112130031), we get a palindrome (45115251154).

The spelling of 13003121123 in words is "thirteen billion, three million, one hundred twenty-one thousand, one hundred twenty-three".