21203300200 has 48 divisors (see below), whose sum is σ = 49307251500. Its totient is φ = 8479672320.

The previous prime is 21203300197. The next prime is 21203300219. The reversal of 21203300200 is 200330212.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 8408523204 + 12794776996 = 91698^2 + 113114^2 .

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, 2008536 + ... + 2019064.

Almost surely, 2^21203300200 is an apocalyptic number.

21203300200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21203300200 is an abundant number, since it is smaller than the sum of its proper divisors (28103951300).

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

21203300200 is a wasteful number, since it uses less digits than its factorization.

21203300200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20614 (or 20605 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 21203300200 its reverse (200330212), we get a palindrome (21403630412).

The spelling of 21203300200 in words is "twenty-one billion, two hundred three million, three hundred thousand, two hundred".