20421043300 has 36 divisors (see below), whose sum is σ = 50644189120. Its totient is φ = 7001500320.

The previous prime is 20421043283. The next prime is 20421043319. The reversal of 20421043300 is 334012402.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14585760 + ... + 14587159.

Almost surely, 2^20421043300 is an apocalyptic number.

20421043300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20421043300 is an abundant number, since it is smaller than the sum of its proper divisors (30223145820).

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

20421043300 is a wasteful number, since it uses less digits than its factorization.

20421043300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29172940 (or 29172933 counting only the distinct ones).

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

Adding to 20421043300 its reverse (334012402), we get a palindrome (20755055702).

The spelling of 20421043300 in words is "twenty billion, four hundred twenty-one million, forty-three thousand, three hundred".