21303030200 has 24 divisors (see below), whose sum is σ = 49529545680. Its totient is φ = 8521212000.

The previous prime is 21303030187. The next prime is 21303030233. The reversal of 21303030200 is 203030312.

It is a super-2 number, since 2×21303030200² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53257376 + ... + 53257775.

It is an arithmetic number, because the mean of its divisors is an integer number (2063731070).

Almost surely, 2^21303030200 is an apocalyptic number.

21303030200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21303030200 is an abundant number, since it is smaller than the sum of its proper divisors (28226515480).

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

21303030200 is a wasteful number, since it uses less digits than its factorization.

21303030200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106515167 (or 106515158 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

Adding to 21303030200 its reverse (203030312), we get a palindrome (21506060512).

The spelling of 21303030200 in words is "twenty-one billion, three hundred three million, thirty thousand, two hundred".