21033420300432 has 60 divisors (see below), whose sum is σ = 58865090248380. Its totient is φ = 7011053570304.

The previous prime is 21033420300419. The next prime is 21033420300439. The reversal of 21033420300432 is 23400302433012.

21033420300432 is a `hidden beast` number, since 2 + 1 + 0 + 334 + 20 + 300 + 4 + 3 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11307105660816 + 9726314639616 = 3362604^2 + 3118704^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21033420300396 and 21033420300405.

It is not an unprimeable number, because it can be changed into a prime (21033420300439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11386494 + ... + 13104162.

It is an arithmetic number, because the mean of its divisors is an integer number (981084837473).

Almost surely, 2^{21033420300432} is an apocalyptic number.

It is an amenable number.

21033420300432 is an abundant number, since it is smaller than the sum of its proper divisors (37831669947948).

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

21033420300432 is a wasteful number, since it uses less digits than its factorization.

21033420300432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1802720 (or 1802711 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 21033420300432 its reverse (23400302433012), we get a palindrome (44433722733444).

The spelling of 21033420300432 in words is "twenty-one trillion, thirty-three billion, four hundred twenty million, three hundred thousand, four hundred thirty-two".