21330132303 has 8 divisors (see below), whose sum is σ = 28508054400. Its totient is φ = 14186149208.

The previous prime is 21330132301. The next prime is 21330132319. The reversal of 21330132303 is 30323103312.

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 21330132303 - 2¹ = 21330132301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21330132303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21330132301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8483283 + ... + 8485796.

It is an arithmetic number, because the mean of its divisors is an integer number (3563506800).

Almost surely, 2^21330132303 is an apocalyptic number.

21330132303 is a deficient number, since it is larger than the sum of its proper divisors (7177922097).

21330132303 is a wasteful number, since it uses less digits than its factorization.

21330132303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16969501.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 21330132303 its reverse (30323103312), we get a palindrome (51653235615).

The spelling of 21330132303 in words is "twenty-one billion, three hundred thirty million, one hundred thirty-two thousand, three hundred three".