21323203211320 has 16 divisors (see below), whose sum is σ = 47977207225560. Its totient is φ = 8529281284512.

The previous prime is 21323203211279. The next prime is 21323203211381. The reversal of 21323203211320 is 2311230232312.

It is a super-2 number, since 2×21323203211320² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266540040102 + ... + 266540040181.

Almost surely, 2^{21323203211320} is an apocalyptic number.

21323203211320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21323203211320 is an abundant number, since it is smaller than the sum of its proper divisors (26654004014240).

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

21323203211320 is a wasteful number, since it uses less digits than its factorization.

21323203211320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533080080294 (or 533080080290 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21323203211320 its reverse (2311230232312), we get a palindrome (23634433443632).

The spelling of 21323203211320 in words is "twenty-one trillion, three hundred twenty-three billion, two hundred three million, two hundred eleven thousand, three hundred twenty".