210330002221 has 2 divisors, whose sum is σ = 210330002222. Its totient is φ = 210330002220.

The previous prime is 210330002219. The next prime is 210330002237. The reversal of 210330002221 is 122200033012.

It is an a-pointer prime, because the next prime (210330002237) can be obtained adding 210330002221 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166696641225 + 43633360996 = 408285^2 + 208886^2 .

It is a cyclic number.

It is not a de Polignac number, because 210330002221 - 2¹ = 210330002219 is a prime.

Together with 210330002219, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 210330002195 and 210330002204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210330002321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105165001110 + 105165001111.

It is an arithmetic number, because the mean of its divisors is an integer number (105165001111).

Almost surely, 2^210330002221 is an apocalyptic number.

It is an amenable number.

210330002221 is a deficient number, since it is larger than the sum of its proper divisors (1).

210330002221 is an equidigital number, since it uses as much as digits as its factorization.

210330002221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 210330002221 its reverse (122200033012), we get a palindrome (332530035233).

The spelling of 210330002221 in words is "two hundred ten billion, three hundred thirty million, two thousand, two hundred twenty-one".