21210200210 has 16 divisors (see below), whose sum is σ = 39066230016. Its totient is φ = 8286775728.

The previous prime is 21210200201. The next prime is 21210200239. The reversal of 21210200210 is 1200201212.

It is a happy number.

21210200210 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 21210200191 and 21210200200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24662594 + ... + 24663453.

It is an arithmetic number, because the mean of its divisors is an integer number (2441639376).

Almost surely, 2^21210200210 is an apocalyptic number.

21210200210 is a deficient number, since it is larger than the sum of its proper divisors (17856029806).

21210200210 is a wasteful number, since it uses less digits than its factorization.

21210200210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49326097.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21210200210 its reverse (1200201212), we get a palindrome (22410401422).

The spelling of 21210200210 in words is "twenty-one billion, two hundred ten million, two hundred thousand, two hundred ten".