1020220171 has 2 divisors, whose sum is σ = 1020220172. Its totient is φ = 1020220170.

The previous prime is 1020220169. The next prime is 1020220207. The reversal of 1020220171 is 1710220201.

It is a weak prime.

It is an emirp because it is prime and its reverse (1710220201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1020220171 - 2¹ = 1020220169 is a prime.

Together with 1020220169, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1020220111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510110085 + 510110086.

It is an arithmetic number, because the mean of its divisors is an integer number (510110086).

Almost surely, 2^1020220171 is an apocalyptic number.

1020220171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020220171 is an equidigital number, since it uses as much as digits as its factorization.

1020220171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 1020220171 is about 31940.8855700652. The cubic root of 1020220171 is about 1006.6951321693.

Adding to 1020220171 its reverse (1710220201), we get a palindrome (2730440372).

The spelling of 1020220171 in words is "one billion, twenty million, two hundred twenty thousand, one hundred seventy-one".