21220332303 has 8 divisors (see below), whose sum is σ = 28339635888. Its totient is φ = 14123958464.

The previous prime is 21220332299. The next prime is 21220332307. The reversal of 21220332303 is 30323302212.

It is an interprime number because it is at equal distance from previous prime (21220332299) and next prime (21220332307).

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 21220332303 - 2² = 21220332299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21220332303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220332307) by changing a digit.

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, 5730276 + ... + 5733977.

It is an arithmetic number, because the mean of its divisors is an integer number (3542454486).

Almost surely, 2^21220332303 is an apocalyptic number.

21220332303 is a deficient number, since it is larger than the sum of its proper divisors (7119303585).

21220332303 is a wasteful number, since it uses less digits than its factorization.

21220332303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11464873.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 21220332303 its reverse (30323302212), we get a palindrome (51543634515).

The spelling of 21220332303 in words is "twenty-one billion, two hundred twenty million, three hundred thirty-two thousand, three hundred three".