13013020110221 has 4 divisors (see below), whose sum is σ = 13013037680412. Its totient is φ = 13013002540032.

The previous prime is 13013020110217. The next prime is 13013020110283. The reversal of 13013020110221 is 12201102031031.

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 7515219132100 + 5497800978121 = 2741390^2 + 2344739^2 .

It is a cyclic number.

It is not a de Polignac number, because 13013020110221 - 2² = 13013020110217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13013020110221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13013020110421) 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, 7622900 + ... + 9172493.

It is an arithmetic number, because the mean of its divisors is an integer number (3253259420103).

Almost surely, 2^{13013020110221} is an apocalyptic number.

It is an amenable number.

13013020110221 is a deficient number, since it is larger than the sum of its proper divisors (17570191).

13013020110221 is an equidigital number, since it uses as much as digits as its factorization.

13013020110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17570190.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 13013020110221 its reverse (12201102031031), we get a palindrome (25214122141252).

The spelling of 13013020110221 in words is "thirteen trillion, thirteen billion, twenty million, one hundred ten thousand, two hundred twenty-one".