21131330200 has 24 divisors (see below), whose sum is σ = 49130343180. Its totient is φ = 8452532000.

The previous prime is 21131330197. The next prime is 21131330219. The reversal of 21131330200 is 203313112.

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, 52828126 + ... + 52828525.

Almost surely, 2^21131330200 is an apocalyptic number.

21131330200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21131330200 is an abundant number, since it is smaller than the sum of its proper divisors (27999012980).

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

21131330200 is a wasteful number, since it uses less digits than its factorization.

21131330200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105656667 (or 105656658 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21131330200 its reverse (203313112), we get a palindrome (21334643312).

The spelling of 21131330200 in words is "twenty-one billion, one hundred thirty-one million, three hundred thirty thousand, two hundred".