21323216302 has 8 divisors (see below), whose sum is σ = 32068336896. Its totient is φ = 10633770672.

The previous prime is 21323216287. The next prime is 21323216329. The reversal of 21323216302 is 20361232312.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13917783 + ... + 13919314.

It is an arithmetic number, because the mean of its divisors is an integer number (4008542112).

Almost surely, 2^21323216302 is an apocalyptic number.

21323216302 is a deficient number, since it is larger than the sum of its proper divisors (10745120594).

21323216302 is a wasteful number, since it uses less digits than its factorization.

21323216302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27837482.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21323216302 its reverse (20361232312), we get a palindrome (41684448614).

The spelling of 21323216302 in words is "twenty-one billion, three hundred twenty-three million, two hundred sixteen thousand, three hundred two".