21002013303 has 8 divisors (see below), whose sum is σ = 28066473600. Its totient is φ = 13969447608.

The previous prime is 21002013301. The next prime is 21002013311. The reversal of 21002013303 is 30331020012.

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

It is not a de Polignac number, because 21002013303 - 2¹ = 21002013301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002013301) 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, 7972113 + ... + 7974746.

It is an arithmetic number, because the mean of its divisors is an integer number (3508309200).

Almost surely, 2^21002013303 is an apocalyptic number.

21002013303 is a deficient number, since it is larger than the sum of its proper divisors (7064460297).

21002013303 is a wasteful number, since it uses less digits than its factorization.

21002013303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15947301.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21002013303 its reverse (30331020012), we get a palindrome (51333033315).

The spelling of 21002013303 in words is "twenty-one billion, two million, thirteen thousand, three hundred three".