2012122171 has 2 divisors, whose sum is σ = 2012122172. Its totient is φ = 2012122170.

The previous prime is 2012122169. The next prime is 2012122199. The reversal of 2012122171 is 1712212102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2012122171 - 2¹ = 2012122169 is a prime.

Together with 2012122169, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2012122571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006061085 + 1006061086.

It is an arithmetic number, because the mean of its divisors is an integer number (1006061086).

Almost surely, 2^2012122171 is an apocalyptic number.

2012122171 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012122171 is an equidigital number, since it uses as much as digits as its factorization.

2012122171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 2012122171 is about 44856.6847972518. The cubic root of 2012122171 is about 1262.4614207209.

Adding to 2012122171 its reverse (1712212102), we get a palindrome (3724334273).

The spelling of 2012122171 in words is "two billion, twelve million, one hundred twenty-two thousand, one hundred seventy-one".