21004301411 has 4 divisors (see below), whose sum is σ = 21004599000. Its totient is φ = 21004003824.

The previous prime is 21004301399. The next prime is 21004301419. The reversal of 21004301411 is 11410340012.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21004301411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21004301411.

It is not an unprimeable number, because it can be changed into a prime (21004301419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23855 + ... + 206343.

It is an arithmetic number, because the mean of its divisors is an integer number (5251149750).

Almost surely, 2^21004301411 is an apocalyptic number.

21004301411 is a deficient number, since it is larger than the sum of its proper divisors (297589).

21004301411 is a wasteful number, since it uses less digits than its factorization.

21004301411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297588.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21004301411 its reverse (11410340012), we get a palindrome (32414641423).

The spelling of 21004301411 in words is "twenty-one billion, four million, three hundred one thousand, four hundred eleven".