21304201420 has 12 divisors (see below), whose sum is σ = 44738823024. Its totient is φ = 8521680560.

The previous prime is 21304201417. The next prime is 21304201427. The reversal of 21304201420 is 2410240312.

It is not an unprimeable number, because it can be changed into a prime (21304201427) 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 3 ways as a sum of consecutive naturals, for example, 532605016 + ... + 532605055.

It is an arithmetic number, because the mean of its divisors is an integer number (3728235252).

Almost surely, 2^21304201420 is an apocalyptic number.

21304201420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21304201420 is an abundant number, since it is smaller than the sum of its proper divisors (23434621604).

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

21304201420 is a wasteful number, since it uses less digits than its factorization.

21304201420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065210080 (or 1065210078 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 21304201420 its reverse (2410240312), we get a palindrome (23714441732).

It can be divided in two parts, 2130 and 4201420, that added together give a triangular number (4203550 = T₂₈₉₉).

The spelling of 21304201420 in words is "twenty-one billion, three hundred four million, two hundred one thousand, four hundred twenty".