21321102303320 has 16 divisors (see below), whose sum is σ = 47972480182560. Its totient is φ = 8528440921312.

The previous prime is 21321102303317. The next prime is 21321102303331. The reversal of 21321102303320 is 2330320112312.

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 3 ways as a sum of consecutive naturals, for example, 266513778752 + ... + 266513778831.

It is an arithmetic number, because the mean of its divisors is an integer number (2998280011410).

Almost surely, 2^{21321102303320} is an apocalyptic number.

21321102303320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21321102303320 is an abundant number, since it is smaller than the sum of its proper divisors (26651377879240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21321102303320 is a wasteful number, since it uses less digits than its factorization.

21321102303320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533027557594 (or 533027557590 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21321102303320 its reverse (2330320112312), we get a palindrome (23651422415632).

The spelling of 21321102303320 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred two million, three hundred three thousand, three hundred twenty".