20012222000171 has 2 divisors, whose sum is σ = 20012222000172. Its totient is φ = 20012222000170.

The previous prime is 20012222000167. The next prime is 20012222000209. The reversal of 20012222000171 is 17100022221002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20012222000171 - 2² = 20012222000167 is a prime.

It is not a weakly prime, because it can be changed into another prime (20012222006171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006111000085 + 10006111000086.

It is an arithmetic number, because the mean of its divisors is an integer number (10006111000086).

Almost surely, 2^{20012222000171} is an apocalyptic number.

20012222000171 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012222000171 is an equidigital number, since it uses as much as digits as its factorization.

20012222000171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 20012222000171 its reverse (17100022221002), we get a palindrome (37112244221173).

The spelling of 20012222000171 in words is "twenty trillion, twelve billion, two hundred twenty-two million, one hundred seventy-one", and thus it is an aban number.