12020121330013 has 4 divisors (see below), whose sum is σ = 12727187290620. Its totient is φ = 11313055369408.

The previous prime is 12020121329981. The next prime is 12020121330023. The reversal of 12020121330013 is 31003312102021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6806995796484 + 5213125533529 = 2609022^2 + 2283227^2 .

It is a cyclic number.

It is not a de Polignac number, because 12020121330013 - 2⁵ = 12020121329981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020121330023) 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, 353532980278 + ... + 353532980311.

It is an arithmetic number, because the mean of its divisors is an integer number (3181796822655).

Almost surely, 2^{12020121330013} is an apocalyptic number.

It is an amenable number.

12020121330013 is a deficient number, since it is larger than the sum of its proper divisors (707065960607).

12020121330013 is an equidigital number, since it uses as much as digits as its factorization.

12020121330013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707065960606.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12020121330013 its reverse (31003312102021), we get a palindrome (43023433432034).

The spelling of 12020121330013 in words is "twelve trillion, twenty billion, one hundred twenty-one million, three hundred thirty thousand, thirteen".