21303210302 has 32 divisors (see below), whose sum is σ = 35058355200. Its totient is φ = 9628214400.

The previous prime is 21303210283. The next prime is 21303210319. The reversal of 21303210302 is 20301230312.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8163974 + ... + 8166582.

It is an arithmetic number, because the mean of its divisors is an integer number (1095573600).

Almost surely, 2^21303210302 is an apocalyptic number.

21303210302 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21303210302 is a deficient number, since it is larger than the sum of its proper divisors (13755144898).

21303210302 is a wasteful number, since it uses less digits than its factorization.

21303210302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4592.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21303210302 its reverse (20301230312), we get a palindrome (41604440614).

The spelling of 21303210302 in words is "twenty-one billion, three hundred three million, two hundred ten thousand, three hundred two".