21023024244044 has 6 divisors (see below), whose sum is σ = 36790292427084. Its totient is φ = 10511512122020.

The previous prime is 21023024244043. The next prime is 21023024244049. The reversal of 21023024244044 is 44044242032012.

It is a self number, because there is not a number n which added to its sum of digits gives 21023024244044.

It is not an unprimeable number, because it can be changed into a prime (21023024244043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2627878030502 + ... + 2627878030509.

It is an arithmetic number, because the mean of its divisors is an integer number (6131715404514).

Almost surely, 2^{21023024244044} is an apocalyptic number.

It is an amenable number.

21023024244044 is a deficient number, since it is larger than the sum of its proper divisors (15767268183040).

21023024244044 is a wasteful number, since it uses less digits than its factorization.

21023024244044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5255756061015 (or 5255756061013 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 21023024244044 its reverse (44044242032012), we get a palindrome (65067266276056).

The spelling of 21023024244044 in words is "twenty-one trillion, twenty-three billion, twenty-four million, two hundred forty-four thousand, forty-four".