13021310202221 has 16 divisors (see below), whose sum is σ = 13275395527680. Its totient is φ = 12768372237360.

The previous prime is 13021310202217. The next prime is 13021310202223. The reversal of 13021310202221 is 12220201312031.

It is a cyclic number.

It is not a de Polignac number, because 13021310202221 - 2² = 13021310202217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13021310202193 and 13021310202202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021310202223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43883660 + ... + 44179386.

It is an arithmetic number, because the mean of its divisors is an integer number (829712220480).

Almost surely, 2^{13021310202221} is an apocalyptic number.

It is an amenable number.

13021310202221 is a deficient number, since it is larger than the sum of its proper divisors (254085325459).

13021310202221 is a wasteful number, since it uses less digits than its factorization.

13021310202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297664.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 13021310202221 its reverse (12220201312031), we get a palindrome (25241511514252).

The spelling of 13021310202221 in words is "thirteen trillion, twenty-one billion, three hundred ten million, two hundred two thousand, two hundred twenty-one".