1002220171 has 2 divisors, whose sum is σ = 1002220172. Its totient is φ = 1002220170.

The previous prime is 1002220169. The next prime is 1002220183. The reversal of 1002220171 is 1710222001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1002220171 - 2¹ = 1002220169 is a prime.

Together with 1002220169, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1002226171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501110085 + 501110086.

It is an arithmetic number, because the mean of its divisors is an integer number (501110086).

Almost surely, 2^1002220171 is an apocalyptic number.

1002220171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002220171 is an equidigital number, since it uses as much as digits as its factorization.

1002220171 is an evil number, because the sum of its binary digits is even.

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

The square root of 1002220171 is about 31657.8611248454. The cubic root of 1002220171 is about 1000.7395099902.

Adding to 1002220171 its reverse (1710222001), we get a palindrome (2712442172).

The spelling of 1002220171 in words is "one billion, two million, two hundred twenty thousand, one hundred seventy-one".