21233202012320 has 48 divisors (see below), whose sum is σ = 50210365733640. Its totient is φ = 8485335665664.

The previous prime is 21233202012317. The next prime is 21233202012397. The reversal of 21233202012320 is 2321020233212.

It can be written as a sum of positive squares in 4 ways, for example, as 18707251235344 + 2525950776976 = 4325188^2 + 1589324^2 .

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 7 ways as a sum of consecutive naturals, for example, 61899827 + ... + 62241906.

Almost surely, 2^{21233202012320} is an apocalyptic number.

21233202012320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21233202012320 is an abundant number, since it is smaller than the sum of its proper divisors (28977163721320).

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

21233202012320 is a wasteful number, since it uses less digits than its factorization.

21233202012320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124142817 (or 124142809 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21233202012320 its reverse (2321020233212), we get a palindrome (23554222245532).

The spelling of 21233202012320 in words is "twenty-one trillion, two hundred thirty-three billion, two hundred two million, twelve thousand, three hundred twenty".