21321484599 has 8 divisors (see below), whose sum is σ = 28431527040. Its totient is φ = 14212882616.

The previous prime is 21321484589. The next prime is 21321484607. The reversal of 21321484599 is 99548412312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21321484599 - 2⁸ = 21321484343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21321484549) 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, 325089 + ... + 385130.

It is an arithmetic number, because the mean of its divisors is an integer number (3553940880).

Almost surely, 2^21321484599 is an apocalyptic number.

21321484599 is a deficient number, since it is larger than the sum of its proper divisors (7110042441).

21321484599 is a wasteful number, since it uses less digits than its factorization.

21321484599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720229.

The product of its digits is 622080, while the sum is 48.

The spelling of 21321484599 in words is "twenty-one billion, three hundred twenty-one million, four hundred eighty-four thousand, five hundred ninety-nine".