21044324411 has 8 divisors (see below), whose sum is σ = 23749081200. Its totient is φ = 18471507040.

The previous prime is 21044324383. The next prime is 21044324423. The reversal of 21044324411 is 11442344012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21044324411 - 2¹⁰ = 21044323387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21044324111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32984516 + ... + 32985153.

It is an arithmetic number, because the mean of its divisors is an integer number (2968635150).

Almost surely, 2^21044324411 is an apocalyptic number.

21044324411 is a deficient number, since it is larger than the sum of its proper divisors (2704756789).

21044324411 is a wasteful number, since it uses less digits than its factorization.

21044324411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65969709.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 21044324411 its reverse (11442344012), we get a palindrome (32486668423).

The spelling of 21044324411 in words is "twenty-one billion, forty-four million, three hundred twenty-four thousand, four hundred eleven".