21334404411 has 12 divisors (see below), whose sum is σ = 31187644488. Its totient is φ = 14051575104.

The previous prime is 21334404379. The next prime is 21334404433. The reversal of 21334404411 is 11440443312.

21334404411 is a `hidden beast` number, since 213 + 3 + 4 + 4 + 0 + 441 + 1 = 666.

It is not a de Polignac number, because 21334404411 - 2⁵ = 21334404379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21334404911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14279310 + ... + 14280803.

It is an arithmetic number, because the mean of its divisors is an integer number (2598970374).

Almost surely, 2^21334404411 is an apocalyptic number.

21334404411 is a deficient number, since it is larger than the sum of its proper divisors (9853240077).

21334404411 is a wasteful number, since it uses less digits than its factorization.

21334404411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28560202 (or 28560199 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 21334404411 its reverse (11440443312), we get a palindrome (32774847723).

The spelling of 21334404411 in words is "twenty-one billion, three hundred thirty-four million, four hundred four thousand, four hundred eleven".