13310331232221 has 24 divisors (see below), whose sum is σ = 19939941985600. Its totient is φ = 8872738525152.

The previous prime is 13310331232217. The next prime is 13310331232241. The reversal of 13310331232221 is 12223213301331.

13310331232221 is a `hidden beast` number, since 1 + 3 + 3 + 1 + 0 + 3 + 312 + 322 + 21 = 666.

It is not a de Polignac number, because 13310331232221 - 2² = 13310331232217 is a prime.

It is a super-2 number, since 2×13310331232221² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13310331232241) 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 23 ways as a sum of consecutive naturals, for example, 137505 + ... + 5161353.

Almost surely, 2^{13310331232221} is an apocalyptic number.

It is an amenable number.

13310331232221 is a deficient number, since it is larger than the sum of its proper divisors (6629610753379).

13310331232221 is an equidigital number, since it uses as much as digits as its factorization.

13310331232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5034767 (or 5034755 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 13310331232221 its reverse (12223213301331), we get a palindrome (25533544533552).

The spelling of 13310331232221 in words is "thirteen trillion, three hundred ten billion, three hundred thirty-one million, two hundred thirty-two thousand, two hundred twenty-one".