21104401244334 has 64 divisors (see below), whose sum is σ = 44867616245760. Its totient is φ = 6607194572160.

The previous prime is 21104401244273. The next prime is 21104401244359. The reversal of 21104401244334 is 43344210440112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21104401244295 and 21104401244304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7147849 + ... + 9659220.

It is an arithmetic number, because the mean of its divisors is an integer number (701056503840).

Almost surely, 2^{21104401244334} is an apocalyptic number.

21104401244334 is an abundant number, since it is smaller than the sum of its proper divisors (23763215001426).

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

21104401244334 is a wasteful number, since it uses less digits than its factorization.

21104401244334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16807305.

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 21104401244334 its reverse (43344210440112), we get a palindrome (64448611684446).

The spelling of 21104401244334 in words is "twenty-one trillion, one hundred four billion, four hundred one million, two hundred forty-four thousand, three hundred thirty-four".