21110404134344 has 32 divisors (see below), whose sum is σ = 45236785936320. Its totient is φ = 9047274927936.

The previous prime is 21110404134311. The next prime is 21110404134383. The reversal of 21110404134344 is 44343140401112.

It is a self number, because there is not a number n which added to its sum of digits gives 21110404134344.

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, 13785842 + ... + 15240414.

It is an arithmetic number, because the mean of its divisors is an integer number (1413649560510).

Almost surely, 2^{21110404134344} is an apocalyptic number.

It is an amenable number.

21110404134344 is an abundant number, since it is smaller than the sum of its proper divisors (24126381801976).

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

21110404134344 is a wasteful number, since it uses less digits than its factorization.

21110404134344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713749 (or 1713745 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 21110404134344 its reverse (44343140401112), we get a palindrome (65453544535456).

The spelling of 21110404134344 in words is "twenty-one trillion, one hundred ten billion, four hundred four million, one hundred thirty-four thousand, three hundred forty-four".