21404104104000 has 112 divisors (see below), whose sum is σ = 70676351830656. Its totient is φ = 5707761088000.

The previous prime is 21404104103989. The next prime is 21404104104001. The reversal of 21404104104000 is 40140140412.

21404104104000 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (21404104104001) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 445894836 + ... + 445942835.

Almost surely, 2^{21404104104000} is an apocalyptic number.

21404104104000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21404104104000 is an abundant number, since it is smaller than the sum of its proper divisors (49272247726656).

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

21404104104000 is an equidigital number, since it uses as much as digits as its factorization.

21404104104000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891837701 (or 891837681 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 21404104104000 its reverse (40140140412), we get a palindrome (21444244244412).

The spelling of 21404104104000 in words is "twenty-one trillion, four hundred four billion, one hundred four million, one hundred four thousand".