210200102221 has 2 divisors, whose sum is σ = 210200102222. Its totient is φ = 210200102220.

The previous prime is 210200102183. The next prime is 210200102239. The reversal of 210200102221 is 122201002012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 178109320900 + 32090781321 = 422030^2 + 179139^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210200102221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210200102261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105100051110 + 105100051111.

It is an arithmetic number, because the mean of its divisors is an integer number (105100051111).

Almost surely, 2^210200102221 is an apocalyptic number.

It is an amenable number.

210200102221 is a deficient number, since it is larger than the sum of its proper divisors (1).

210200102221 is an equidigital number, since it uses as much as digits as its factorization.

210200102221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 210200102221 its reverse (122201002012), we get a palindrome (332401104233).

The spelling of 210200102221 in words is "two hundred ten billion, two hundred million, one hundred two thousand, two hundred twenty-one".