13221042020413 has 6 divisors (see below), whose sum is σ = 13820862452894. Its totient is φ = 12646214105976.

The previous prime is 13221042020369. The next prime is 13221042020423. The reversal of 13221042020413 is 31402024012231.

It can be written as a sum of positive squares in only one way, i.e., 11457771414489 + 1763270605924 = 3384933^2 + 1327882^2 .

It is not a de Polignac number, because 13221042020413 - 2³³ = 13212452085821 is a prime.

It is a super-2 number, since 2×13221042020413² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221042020423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12496258470 + ... + 12496259527.

Almost surely, 2^{13221042020413} is an apocalyptic number.

It is an amenable number.

13221042020413 is a deficient number, since it is larger than the sum of its proper divisors (599820432481).

13221042020413 is an equidigital number, since it uses as much as digits as its factorization.

13221042020413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24992518043 (or 24992518020 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 13221042020413 its reverse (31402024012231), we get a palindrome (44623066032644).

The spelling of 13221042020413 in words is "thirteen trillion, two hundred twenty-one billion, forty-two million, twenty thousand, four hundred thirteen".