21033340204 has 24 divisors (see below), whose sum is σ = 37606435328. Its totient is φ = 10290913920.

The previous prime is 21033340201. The next prime is 21033340267. The reversal of 21033340204 is 40204333012.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21033340201) 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 7 ways as a sum of consecutive naturals, for example, 246507 + ... + 320674.

Almost surely, 2^21033340204 is an apocalyptic number.

It is an amenable number.

21033340204 is a deficient number, since it is larger than the sum of its proper divisors (16573095124).

21033340204 is a wasteful number, since it uses less digits than its factorization.

21033340204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567385 (or 567383 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 21033340204 its reverse (40204333012), we get a palindrome (61237673216).

The spelling of 21033340204 in words is "twenty-one billion, thirty-three million, three hundred forty thousand, two hundred four".