21043441324000 has 48 divisors (see below), whose sum is σ = 51703735342896. Its totient is φ = 8417376528000.

The previous prime is 21043441323943. The next prime is 21043441324069. The reversal of 21043441324000 is 42314434012.

It is a self number, because there is not a number n which added to its sum of digits gives 21043441324000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2630426166 + ... + 2630434165.

It is an arithmetic number, because the mean of its divisors is an integer number (1077161152977).

Almost surely, 2^{21043441324000} is an apocalyptic number.

21043441324000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21043441324000 is an abundant number, since it is smaller than the sum of its proper divisors (30660294018896).

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

21043441324000 is an equidigital number, since it uses as much as digits as its factorization.

21043441324000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5260860356 (or 5260860338 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 21043441324000 its reverse (42314434012), we get a palindrome (21085755758012).

The spelling of 21043441324000 in words is "twenty-one trillion, forty-three billion, four hundred forty-one million, three hundred twenty-four thousand".