20421000323200 has 96 divisors (see below), whose sum is σ = 51199182038160. Its totient is φ = 8046483624960.

The previous prime is 20421000323149. The next prime is 20421000323201. The reversal of 20421000323200 is 232300012402.

It is not an unprimeable number, because it can be changed into a prime (20421000323201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47409202 + ... + 47838001.

Almost surely, 2^{20421000323200} is an apocalyptic number.

20421000323200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20421000323200 is an abundant number, since it is smaller than the sum of its proper divisors (30778181714960).

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

20421000323200 is an equidigital number, since it uses as much as digits as its factorization.

20421000323200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95247294 (or 95247277 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20421000323200 its reverse (232300012402), we get a palindrome (20653300335602).

The spelling of 20421000323200 in words is "twenty trillion, four hundred twenty-one billion, three hundred twenty-three thousand, two hundred".