21301210200 has 96 divisors (see below), whose sum is σ = 66938461200. Its totient is φ = 5602498560.

The previous prime is 21301210193. The next prime is 21301210207. The reversal of 21301210200 is 201210312.

It is an interprime number because it is at equal distance from previous prime (21301210193) and next prime (21301210207).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21301210207) 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, 199365 + ... + 286964.

Almost surely, 2^21301210200 is an apocalyptic number.

21301210200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21301210200 is an abundant number, since it is smaller than the sum of its proper divisors (45637251000).

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

21301210200 is a wasteful number, since it uses less digits than its factorization.

21301210200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486421 (or 486412 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21301210200 its reverse (201210312), we get a palindrome (21502420512).

The spelling of 21301210200 in words is "twenty-one billion, three hundred one million, two hundred ten thousand, two hundred".