13413021013121 has 4 divisors (see below), whose sum is σ = 13413030826500. Its totient is φ = 13413011199744.

The previous prime is 13413021013109. The next prime is 13413021013129. The reversal of 13413021013121 is 12131012031431.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4097486850625 + 9315534162496 = 2024225^2 + 3052136^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13413021013121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13413021013129) 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, 2444696 + ... + 5727353.

It is an arithmetic number, because the mean of its divisors is an integer number (3353257706625).

Almost surely, 2^{13413021013121} is an apocalyptic number.

It is an amenable number.

13413021013121 is a deficient number, since it is larger than the sum of its proper divisors (9813379).

13413021013121 is an equidigital number, since it uses as much as digits as its factorization.

13413021013121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9813378.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 13413021013121 its reverse (12131012031431), we get a palindrome (25544033044552).

The spelling of 13413021013121 in words is "thirteen trillion, four hundred thirteen billion, twenty-one million, thirteen thousand, one hundred twenty-one".