21300435200 has 108 divisors (see below), whose sum is σ = 57514995888. Its totient is φ = 7745587200.

The previous prime is 21300435197. The next prime is 21300435227. The reversal of 21300435200 is 253400312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 80882 + ... + 221681.

Almost surely, 2^21300435200 is an apocalyptic number.

21300435200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21300435200 is an abundant number, since it is smaller than the sum of its proper divisors (36214560688).

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

21300435200 is a wasteful number, since it uses less digits than its factorization.

21300435200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302600 (or 302581 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 21300435200 its reverse (253400312), we get a palindrome (21553835512).

The spelling of 21300435200 in words is "twenty-one billion, three hundred million, four hundred thirty-five thousand, two hundred".