21334404410 has 32 divisors (see below), whose sum is σ = 44097912000. Its totient is φ = 7349650560.

The previous prime is 21334404379. The next prime is 21334404433. The reversal of 21334404410 is 1440443312.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21334404410.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5101835 + ... + 5106014.

It is an arithmetic number, because the mean of its divisors is an integer number (1378059750).

Almost surely, 2^21334404410 is an apocalyptic number.

21334404410 is an abundant number, since it is smaller than the sum of its proper divisors (22763507590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21334404410 is a wasteful number, since it uses less digits than its factorization.

21334404410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10207886.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 21334404410 its reverse (1440443312), we get a palindrome (22774847722).

The spelling of 21334404410 in words is "twenty-one billion, three hundred thirty-four million, four hundred four thousand, four hundred ten".