1020000220171 has 2 divisors, whose sum is σ = 1020000220172. Its totient is φ = 1020000220170.

The previous prime is 1020000220037. The next prime is 1020000220193. The reversal of 1020000220171 is 1710220000201.

It is a strong prime.

It is an emirp because it is prime and its reverse (1710220000201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020000220171 is a prime.

It is not a weakly prime, because it can be changed into another prime (1020000224171) 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, 510000110085 + 510000110086.

It is an arithmetic number, because the mean of its divisors is an integer number (510000110086).

Almost surely, 2^{1020000220171} is an apocalyptic number.

1020000220171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020000220171 is an equidigital number, since it uses as much as digits as its factorization.

1020000220171 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.

Adding to 1020000220171 its reverse (1710220000201), we get a palindrome (2730220220372).

The spelling of 1020000220171 in words is "one trillion, twenty billion, two hundred twenty thousand, one hundred seventy-one".