21303024123200 has 42 divisors (see below), whose sum is σ = 52418753737086. Its totient is φ = 8521209648640.

The previous prime is 21303024123181. The next prime is 21303024123233. The reversal of 21303024123200 is 232142030312.

It can be written as a sum of positive squares in 3 ways, for example, as 4873815659584 + 16429208463616 = 2207672^2 + 4053296^2 .

It is a super-3 number, since 3×21303024123200³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6657193439 + ... + 6657196638.

Almost surely, 2^{21303024123200} is an apocalyptic number.

21303024123200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21303024123200 is an abundant number, since it is smaller than the sum of its proper divisors (31115729613886).

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

21303024123200 is a wasteful number, since it uses less digits than its factorization.

21303024123200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13314390099 (or 13314390084 counting only the distinct ones).

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

Adding to 21303024123200 its reverse (232142030312), we get a palindrome (21535166153512).

The spelling of 21303024123200 in words is "twenty-one trillion, three hundred three billion, twenty-four million, one hundred twenty-three thousand, two hundred".