21333542204 has 24 divisors (see below), whose sum is σ = 40258429008. Its totient is φ = 9833293440.

The previous prime is 21333542189. The next prime is 21333542221. The reversal of 21333542204 is 40224533312.

It is a happy number.

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, 229982 + ... + 309125.

It is an arithmetic number, because the mean of its divisors is an integer number (1677434542).

Almost surely, 2^21333542204 is an apocalyptic number.

It is an amenable number.

21333542204 is a deficient number, since it is larger than the sum of its proper divisors (18924886804).

21333542204 is a wasteful number, since it uses less digits than its factorization.

21333542204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539885 (or 539883 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 29.

The spelling of 21333542204 in words is "twenty-one billion, three hundred thirty-three million, five hundred forty-two thousand, two hundred four".