21332100200 has 24 divisors (see below), whose sum is σ = 49597133430. Its totient is φ = 8532840000.

The previous prime is 21332100199. The next prime is 21332100241. The reversal of 21332100200 is 200123312.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 20791909636 + 540190564 = 144194^2 + 23242^2 .

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, 53330051 + ... + 53330450.

Almost surely, 2^21332100200 is an apocalyptic number.

21332100200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21332100200 is an abundant number, since it is smaller than the sum of its proper divisors (28265033230).

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

21332100200 is a wasteful number, since it uses less digits than its factorization.

21332100200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106660517 (or 106660508 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21332100200 its reverse (200123312), we get a palindrome (21532223512).

The spelling of 21332100200 in words is "twenty-one billion, three hundred thirty-two million, one hundred thousand, two hundred".