21210302200 has 48 divisors (see below), whose sum is σ = 49383837000. Its totient is φ = 8472097920.

The previous prime is 21210302189. The next prime is 21210302251. The reversal of 21210302200 is 220301212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67011 + ... + 216589.

Almost surely, 2^21210302200 is an apocalyptic number.

21210302200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21210302200 is an abundant number, since it is smaller than the sum of its proper divisors (28173534800).

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

21210302200 is a wasteful number, since it uses less digits than its factorization.

21210302200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150304 (or 150295 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 21210302200 its reverse (220301212), we get a palindrome (21430603412).

The spelling of 21210302200 in words is "twenty-one billion, two hundred ten million, three hundred two thousand, two hundred".