13121302102321 has 4 divisors (see below), whose sum is σ = 14995773831232. Its totient is φ = 11246830373412.

The previous prime is 13121302102283. The next prime is 13121302102369. The reversal of 13121302102321 is 12320120312131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13121302102321 - 2¹⁷ = 13121301971249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13121302102292 and 13121302102301.

It is not an unprimeable number, because it can be changed into a prime (13121302102421) 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, 937235864445 + ... + 937235864458.

It is an arithmetic number, because the mean of its divisors is an integer number (3748943457808).

Almost surely, 2^{13121302102321} is an apocalyptic number.

It is an amenable number.

13121302102321 is a deficient number, since it is larger than the sum of its proper divisors (1874471728911).

13121302102321 is an equidigital number, since it uses as much as digits as its factorization.

13121302102321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1874471728910.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 13121302102321 its reverse (12320120312131), we get a palindrome (25441422414452).

The spelling of 13121302102321 in words is "thirteen trillion, one hundred twenty-one billion, three hundred two million, one hundred two thousand, three hundred twenty-one".