21334440450052 has 12 divisors (see below), whose sum is σ = 37336552713180. Its totient is φ = 10666853960576.

The previous prime is 21334440450041. The next prime is 21334440450061. The reversal of 21334440450052 is 25005404443312.

It can be written as a sum of positive squares in 2 ways, for example, as 9166943068416 + 12167497381636 = 3027696^2 + 3488194^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21334440449993 and 21334440450020.

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, 91435033 + ... + 91668064.

It is an arithmetic number, because the mean of its divisors is an integer number (3111379392765).

Almost surely, 2^{21334440450052} is an apocalyptic number.

It is an amenable number.

21334440450052 is a deficient number, since it is larger than the sum of its proper divisors (16002112263128).

21334440450052 is a wasteful number, since it uses less digits than its factorization.

21334440450052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183132230 (or 183132228 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 37.

Adding to 21334440450052 its reverse (25005404443312), we get a palindrome (46339844893364).

The spelling of 21334440450052 in words is "twenty-one trillion, three hundred thirty-four billion, four hundred forty million, four hundred fifty thousand, fifty-two".