1000021100171 has 2 divisors, whose sum is σ = 1000021100172. Its totient is φ = 1000021100170.

The previous prime is 1000021100159. The next prime is 1000021100191. The reversal of 1000021100171 is 1710011200001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000021100171 - 2⁶ = 1000021100107 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000021100191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500010550085 + 500010550086.

It is an arithmetic number, because the mean of its divisors is an integer number (500010550086).

Almost surely, 2^{1000021100171} is an apocalyptic number.

1000021100171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000021100171 is an equidigital number, since it uses as much as digits as its factorization.

1000021100171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14, while the sum is 14.

Adding to 1000021100171 its reverse (1710011200001), we get a palindrome (2710032300172).

The spelling of 1000021100171 in words is "one trillion, twenty-one million, one hundred thousand, one hundred seventy-one".