13121013003123 has 8 divisors (see below), whose sum is σ = 17494714491136. Its totient is φ = 8747326758600.

The previous prime is 13121013003097. The next prime is 13121013003127. The reversal of 13121013003123 is 32130031012131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13121013003123 - 2¹⁰ = 13121013002099 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13121013003123.

It is not an unprimeable number, because it can be changed into a prime (13121013003127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1622983 + ... + 5373648.

It is an arithmetic number, because the mean of its divisors is an integer number (2186839311392).

Almost surely, 2^{13121013003123} is an apocalyptic number.

13121013003123 is a deficient number, since it is larger than the sum of its proper divisors (4373701488013).

13121013003123 is an equidigital number, since it uses as much as digits as its factorization.

13121013003123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7621745.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 13121013003123 its reverse (32130031012131), we get a palindrome (45251044015254).

The spelling of 13121013003123 in words is "thirteen trillion, one hundred twenty-one billion, thirteen million, three thousand, one hundred twenty-three".