210200102210221 has 2 divisors, whose sum is σ = 210200102210222. Its totient is φ = 210200102210220.

The previous prime is 210200102210177. The next prime is 210200102210251. The reversal of 210200102210221 is 122012201002012.

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., 167352670028196 + 42847432182025 = 12936486^2 + 6545795^2 .

It is a cyclic number.

It is not a de Polignac number, because 210200102210221 - 2³⁹ = 209650346396333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210200102210195 and 210200102210204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210200102210251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105100051105110 + 105100051105111.

It is an arithmetic number, because the mean of its divisors is an integer number (105100051105111).

Almost surely, 2^{210200102210221} is an apocalyptic number.

It is an amenable number.

210200102210221 is a deficient number, since it is larger than the sum of its proper divisors (1).

210200102210221 is an equidigital number, since it uses as much as digits as its factorization.

210200102210221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 210200102210221 its reverse (122012201002012), we get a palindrome (332212303212233).

The spelling of 210200102210221 in words is "two hundred ten trillion, two hundred billion, one hundred two million, two hundred ten thousand, two hundred twenty-one".