21233052052400 has 30 divisors (see below), whose sum is σ = 51012407556852. Its totient is φ = 8493220820800.

The previous prime is 21233052052343. The next prime is 21233052052409. The reversal of 21233052052400 is 425025033212.

It is not an unprimeable number, because it can be changed into a prime (21233052052409) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 26541314666 + ... + 26541315465.

Almost surely, 2^{21233052052400} is an apocalyptic number.

21233052052400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21233052052400 is an abundant number, since it is smaller than the sum of its proper divisors (29779355504452).

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

21233052052400 is a wasteful number, since it uses less digits than its factorization.

21233052052400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53082630149 (or 53082630138 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 21233052052400 its reverse (425025033212), we get a palindrome (21658077085612).

The spelling of 21233052052400 in words is "twenty-one trillion, two hundred thirty-three billion, fifty-two million, fifty-two thousand, four hundred".