13443521021112 has 256 divisors, whose sum is σ = 42522955776000. Its totient is φ = 3446445127680.

The previous prime is 13443521021041. The next prime is 13443521021131. The reversal of 13443521021112 is 21112012534431.

It is a super-2 number, since 2×13443521021112² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13443521021112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 85658889 + ... + 85815687.

It is an arithmetic number, because the mean of its divisors is an integer number (166105296000).

Almost surely, 2^{13443521021112} is an apocalyptic number.

13443521021112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13443521021112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21261477888000).

13443521021112 is an abundant number, since it is smaller than the sum of its proper divisors (29079434754888).

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

13443521021112 is a wasteful number, since it uses less digits than its factorization.

13443521021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157926 (or 157922 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 13443521021112 its reverse (21112012534431), we get a palindrome (34555533555543).

The spelling of 13443521021112 in words is "thirteen trillion, four hundred forty-three billion, five hundred twenty-one million, twenty-one thousand, one hundred twelve".