210200210212221 has 16 divisors (see below), whose sum is σ = 314490963577920. Its totient is φ = 138746013339600.

The previous prime is 210200210212169. The next prime is 210200210212253. The reversal of 210200210212221 is 122212012002012.

It is a happy number.

210200210212221 is a `hidden beast` number, since 2 + 1 + 0 + 20 + 0 + 210 + 212 + 221 = 666.

It is not a de Polignac number, because 210200210212221 - 2¹⁰ = 210200210211197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210200210212194 and 210200210212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210200210212121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38540556535 + ... + 38540561988.

It is an arithmetic number, because the mean of its divisors is an integer number (19655685223620).

Almost surely, 2^{210200210212221} is an apocalyptic number.

It is an amenable number.

210200210212221 is a deficient number, since it is larger than the sum of its proper divisors (104290753365699).

210200210212221 is a wasteful number, since it uses less digits than its factorization.

210200210212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77081118633 (or 77081118627 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 210200210212221 its reverse (122212012002012), we get a palindrome (332412222214233).

The spelling of 210200210212221 in words is "two hundred ten trillion, two hundred billion, two hundred ten million, two hundred twelve thousand, two hundred twenty-one".