21040302024420 has 96 divisors (see below), whose sum is σ = 67331550682368. Its totient is φ = 4809027305472.

The previous prime is 21040302024407. The next prime is 21040302024529. The reversal of 21040302024420 is 2442020304012.

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 31 ways as a sum of consecutive naturals, for example, 10146964 + ... + 12043316.

It is an arithmetic number, because the mean of its divisors is an integer number (701370319608).

Almost surely, 2^{21040302024420} is an apocalyptic number.

21040302024420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21040302024420 is an abundant number, since it is smaller than the sum of its proper divisors (46291248657948).

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

21040302024420 is a wasteful number, since it uses less digits than its factorization.

21040302024420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922789 (or 1922787 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 21040302024420 its reverse (2442020304012), we get a palindrome (23482322328432).

The spelling of 21040302024420 in words is "twenty-one trillion, forty billion, three hundred two million, twenty-four thousand, four hundred twenty".