13121303201023 has 4 divisors (see below), whose sum is σ = 13811898106360. Its totient is φ = 12430708295688.

The previous prime is 13121303201021. The next prime is 13121303201033. The reversal of 13121303201023 is 32010230312131.

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 13121303201023 - 2¹ = 13121303201021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13121303200985 and 13121303201003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121303201021) 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, 345297452640 + ... + 345297452677.

It is an arithmetic number, because the mean of its divisors is an integer number (3452974526590).

Almost surely, 2^{13121303201023} is an apocalyptic number.

13121303201023 is a deficient number, since it is larger than the sum of its proper divisors (690594905337).

13121303201023 is an equidigital number, since it uses as much as digits as its factorization.

13121303201023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690594905336.

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

Adding to 13121303201023 its reverse (32010230312131), we get a palindrome (45131533513154).

The spelling of 13121303201023 in words is "thirteen trillion, one hundred twenty-one billion, three hundred three million, two hundred one thousand, twenty-three".