21104310011 has 8 divisors (see below), whose sum is σ = 21200989680. Its totient is φ = 21007670112.

The previous prime is 21104309977. The next prime is 21104310023. The reversal of 21104310011 is 11001340112.

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-21104310011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21104310511) 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, 1762601 + ... + 1774533.

It is an arithmetic number, because the mean of its divisors is an integer number (2650123710).

Almost surely, 2^21104310011 is an apocalyptic number.

21104310011 is a deficient number, since it is larger than the sum of its proper divisors (96679669).

21104310011 is a wasteful number, since it uses less digits than its factorization.

21104310011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19885.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 21104310011 its reverse (11001340112), we get a palindrome (32105650123).

The spelling of 21104310011 in words is "twenty-one billion, one hundred four million, three hundred ten thousand, eleven".