210200221 has 16 divisors (see below), whose sum is σ = 262401408. Its totient is φ = 163584000.

The previous prime is 210200213. The next prime is 210200267. The reversal of 210200221 is 122002012.

It is a cyclic number.

It is not a de Polignac number, because 210200221 - 2³ = 210200213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210200198 and 210200207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210200281) 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, 91341 + ... + 93613.

It is an arithmetic number, because the mean of its divisors is an integer number (16400088).

Almost surely, 2^210200221 is an apocalyptic number.

It is an amenable number.

210200221 is a deficient number, since it is larger than the sum of its proper divisors (52201187).

210200221 is a wasteful number, since it uses less digits than its factorization.

210200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3492.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 210200221 is about 14498.2833811455. The cubic root of 210200221 is about 594.5810397162.

Adding to 210200221 its reverse (122002012), we get a palindrome (332202233).

The spelling of 210200221 in words is "two hundred ten million, two hundred thousand, two hundred twenty-one".