13031331330221 has 8 divisors (see below), whose sum is σ = 13040635348224. Its totient is φ = 13022028668880.

The previous prime is 13031331330203. The next prime is 13031331330233. The reversal of 13031331330221 is 12203313313031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13031331330221 - 2²⁶ = 13031264221357 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 (13031331330271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19282775 + ... + 19947131.

It is an arithmetic number, because the mean of its divisors is an integer number (1630079418528).

Almost surely, 2^{13031331330221} is an apocalyptic number.

It is an amenable number.

13031331330221 is a deficient number, since it is larger than the sum of its proper divisors (9304018003).

13031331330221 is a wasteful number, since it uses less digits than its factorization.

13031331330221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678331.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 13031331330221 its reverse (12203313313031), we get a palindrome (25234644643252).

The spelling of 13031331330221 in words is "thirteen trillion, thirty-one billion, three hundred thirty-one million, three hundred thirty thousand, two hundred twenty-one".