21002331303 has 24 divisors (see below), whose sum is σ = 31603375440. Its totient is φ = 13428512640.

The previous prime is 21002331239. The next prime is 21002331347. The reversal of 21002331303 is 30313320012.

It is not a de Polignac number, because 21002331303 - 2⁶ = 21002331239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002330303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 460576 + ... + 504117.

It is an arithmetic number, because the mean of its divisors is an integer number (1316807310).

Almost surely, 2^21002331303 is an apocalyptic number.

21002331303 is a deficient number, since it is larger than the sum of its proper divisors (10601044137).

21002331303 is a wasteful number, since it uses less digits than its factorization.

21002331303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964799 (or 964796 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 21002331303 its reverse (30313320012), we get a palindrome (51315651315).

The spelling of 21002331303 in words is "twenty-one billion, two million, three hundred thirty-one thousand, three hundred three".