21201200300 has 72 divisors (see below), whose sum is σ = 52927445760. Its totient is φ = 7220808000.

The previous prime is 21201200261. The next prime is 21201200303. The reversal of 21201200300 is 300210212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21201200303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5411 + ... + 205989.

Almost surely, 2^21201200300 is an apocalyptic number.

21201200300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21201200300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26463722880).

21201200300 is an abundant number, since it is smaller than the sum of its proper divisors (31726245460).

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

21201200300 is a wasteful number, since it uses less digits than its factorization.

21201200300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200751 (or 200744 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 21201200300 its reverse (300210212), we get a palindrome (21501410512).

The spelling of 21201200300 in words is "twenty-one billion, two hundred one million, two hundred thousand, three hundred".