13031213232221 has 8 divisors (see below), whose sum is σ = 13147656676800. Its totient is φ = 12915279387648.

The previous prime is 13031213232197. The next prime is 13031213232253. The reversal of 13031213232221 is 12223231213031.

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 13031213232221 - 2¹⁸ = 13031212970077 is a prime.

It is a super-2 number, since 2×13031213232221² (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 (13031213232721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127348631 + ... + 127450916.

It is an arithmetic number, because the mean of its divisors is an integer number (1643457084600).

Almost surely, 2^{13031213232221} is an apocalyptic number.

It is an amenable number.

13031213232221 is a deficient number, since it is larger than the sum of its proper divisors (116443444579).

13031213232221 is a wasteful number, since it uses less digits than its factorization.

13031213232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254800003.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 13031213232221 its reverse (12223231213031), we get a palindrome (25254444445252).

The spelling of 13031213232221 in words is "thirteen trillion, thirty-one billion, two hundred thirteen million, two hundred thirty-two thousand, two hundred twenty-one".