21324040211 has 8 divisors (see below), whose sum is σ = 21539217600. Its totient is φ = 21108942400.

The previous prime is 21324040187. The next prime is 21324040217. The reversal of 21324040211 is 11204042312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21324040211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21324040217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 622550 + ... + 655908.

It is an arithmetic number, because the mean of its divisors is an integer number (2692402200).

Almost surely, 2^21324040211 is an apocalyptic number.

21324040211 is a deficient number, since it is larger than the sum of its proper divisors (215177389).

21324040211 is a wasteful number, since it uses less digits than its factorization.

21324040211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39789.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21324040211 its reverse (11204042312), we get a palindrome (32528082523).

The spelling of 21324040211 in words is "twenty-one billion, three hundred twenty-four million, forty thousand, two hundred eleven".