2210220020221 has 2 divisors, whose sum is σ = 2210220020222. Its totient is φ = 2210220020220.

The previous prime is 2210220020213. The next prime is 2210220020321. The reversal of 2210220020221 is 1220200220122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2160106272900 + 50113747321 = 1469730^2 + 223861^2 .

It is a cyclic number.

It is not a de Polignac number, because 2210220020221 - 2³ = 2210220020213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2210220020195 and 2210220020204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2210220020321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105110010110 + 1105110010111.

It is an arithmetic number, because the mean of its divisors is an integer number (1105110010111).

Almost surely, 2^{2210220020221} is an apocalyptic number.

It is an amenable number.

2210220020221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2210220020221 is an equidigital number, since it uses as much as digits as its factorization.

2210220020221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 2210220020221 its reverse (1220200220122), we get a palindrome (3430420240343).

The spelling of 2210220020221 in words is "two trillion, two hundred ten billion, two hundred twenty million, twenty thousand, two hundred twenty-one".