13221443236416 has 56 divisors (see below), whose sum is σ = 34989766301760. Its totient is φ = 4406135956992.

The previous prime is 13221443236387. The next prime is 13221443236447. The reversal of 13221443236416 is 61463234412231.

It is a super-2 number, since 2×13221443236416² (a number of 27 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7065876 + ... + 8738963.

Almost surely, 2^{13221443236416} is an apocalyptic number.

13221443236416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13221443236416 is an abundant number, since it is smaller than the sum of its proper divisors (21768323065344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13221443236416 is a wasteful number, since it uses less digits than its factorization.

13221443236416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15809211 (or 15809201 counting only the distinct ones).

The product of its digits is 497664, while the sum is 42.

Adding to 13221443236416 its reverse (61463234412231), we get a palindrome (74684677648647).

The spelling of 13221443236416 in words is "thirteen trillion, two hundred twenty-one billion, four hundred forty-three million, two hundred thirty-six thousand, four hundred sixteen".