21304124411144 has 16 divisors (see below), whose sum is σ = 39945848533200. Its totient is φ = 10651898135632.

The previous prime is 21304124411123. The next prime is 21304124411159. The reversal of 21304124411144 is 44111442140312.

It is a self number, because there is not a number n which added to its sum of digits gives 21304124411144.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19956014 + ... + 20996445.

It is an arithmetic number, because the mean of its divisors is an integer number (2496615533325).

Almost surely, 2^{21304124411144} is an apocalyptic number.

It is an amenable number.

21304124411144 is a deficient number, since it is larger than the sum of its proper divisors (18641724122056).

21304124411144 is a wasteful number, since it uses less digits than its factorization.

21304124411144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41017492 (or 41017488 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

Adding to 21304124411144 its reverse (44111442140312), we get a palindrome (65415566551456).

The spelling of 21304124411144 in words is "twenty-one trillion, three hundred four billion, one hundred twenty-four million, four hundred eleven thousand, one hundred forty-four".