21333021304 has 32 divisors (see below), whose sum is σ = 45729744480. Its totient is φ = 9139497984.

The previous prime is 21333021271. The next prime is 21333021329. The reversal of 21333021304 is 40312033312.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 96484 + ... + 227980.

It is an arithmetic number, because the mean of its divisors is an integer number (1429054515).

Almost surely, 2^21333021304 is an apocalyptic number.

It is an amenable number.

21333021304 is an abundant number, since it is smaller than the sum of its proper divisors (24396723176).

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

21333021304 is a wasteful number, since it uses less digits than its factorization.

21333021304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134407 (or 134403 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21333021304 its reverse (40312033312), we get a palindrome (61645054616).

The spelling of 21333021304 in words is "twenty-one billion, three hundred thirty-three million, twenty-one thousand, three hundred four".