2012021122171 has 2 divisors, whose sum is σ = 2012021122172. Its totient is φ = 2012021122170.

The previous prime is 2012021122151. The next prime is 2012021122217. The reversal of 2012021122171 is 1712211202102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2012021122171 - 2¹⁹ = 2012020597883 is a prime.

It is not a weakly prime, because it can be changed into another prime (2012021122151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006010561085 + 1006010561086.

It is an arithmetic number, because the mean of its divisors is an integer number (1006010561086).

Almost surely, 2^{2012021122171} is an apocalyptic number.

2012021122171 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012021122171 is an equidigital number, since it uses as much as digits as its factorization.

2012021122171 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 22.

Adding to 2012021122171 its reverse (1712211202102), we get a palindrome (3724232324273).

The spelling of 2012021122171 in words is "two trillion, twelve billion, twenty-one million, one hundred twenty-two thousand, one hundred seventy-one".