21211030200 has 192 divisors, whose sum is σ = 68032833120. Its totient is φ = 5463040000.

The previous prime is 21211030199. The next prime is 21211030231. The reversal of 21211030200 is 203011212.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2480332 + ... + 2488868.

Almost surely, 2^21211030200 is an apocalyptic number.

21211030200 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 21211030200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34016416560).

21211030200 is an abundant number, since it is smaller than the sum of its proper divisors (46821802920).

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

21211030200 is a wasteful number, since it uses less digits than its factorization.

21211030200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8698 (or 8689 counting only the distinct ones).

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

Adding to 21211030200 its reverse (203011212), we get a palindrome (21414041412).

The spelling of 21211030200 in words is "twenty-one billion, two hundred eleven million, thirty thousand, two hundred".