21334013204 has 12 divisors (see below), whose sum is σ = 42668026464. Its totient is φ = 9143148504.

The previous prime is 21334013171. The next prime is 21334013209. The reversal of 21334013204 is 40231043312.

21334013204 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 21334013204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21334013209) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 380964494 + ... + 380964549.

It is an arithmetic number, because the mean of its divisors is an integer number (3555668872).

Almost surely, 2^21334013204 is an apocalyptic number.

It is an amenable number.

21334013204 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21334013204 is a wasteful number, since it uses less digits than its factorization.

21334013204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761929054 (or 761929052 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21334013204 its reverse (40231043312), we get a palindrome (61565056516).

The spelling of 21334013204 in words is "twenty-one billion, three hundred thirty-four million, thirteen thousand, two hundred four".