21341434411 has 24 divisors (see below), whose sum is σ = 23660806400. Its totient is φ = 19234266480.

The previous prime is 21341434343. The next prime is 21341434417. The reversal of 21341434411 is 11443414312.

It is not a de Polignac number, because 21341434411 - 2¹⁷ = 21341303339 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21341434411.

It is not an unprimeable number, because it can be changed into a prime (21341434417) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7390810 + ... + 7393696.

Almost surely, 2^21341434411 is an apocalyptic number.

21341434411 is a deficient number, since it is larger than the sum of its proper divisors (2319371989).

21341434411 is a wasteful number, since it uses less digits than its factorization.

21341434411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3415 (or 3404 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

Adding to 21341434411 its reverse (11443414312), we get a palindrome (32784848723).

The spelling of 21341434411 in words is "twenty-one billion, three hundred forty-one million, four hundred thirty-four thousand, four hundred eleven".