21334002305 has 32 divisors (see below), whose sum is σ = 32121273600. Its totient is φ = 13214373120.

The previous prime is 21334002259. The next prime is 21334002307. The reversal of 21334002305 is 50320043312.

It is not a de Polignac number, because 21334002305 - 2¹⁴ = 21333985921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21334002307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116030 + ... + 236919.

It is an arithmetic number, because the mean of its divisors is an integer number (1003789800).

Almost surely, 2^21334002305 is an apocalyptic number.

It is an amenable number.

21334002305 is a deficient number, since it is larger than the sum of its proper divisors (10787271295).

21334002305 is a wasteful number, since it uses less digits than its factorization.

21334002305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353129.

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 21334002305 its reverse (50320043312), we get a palindrome (71654045617).

The spelling of 21334002305 in words is "twenty-one billion, three hundred thirty-four million, two thousand, three hundred five".