1212211000171 has 2 divisors, whose sum is σ = 1212211000172. Its totient is φ = 1212211000170.

The previous prime is 1212211000153. The next prime is 1212211000201. The reversal of 1212211000171 is 1710001122121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212211000171 - 2¹¹ = 1212210998123 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212211000771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606105500085 + 606105500086.

It is an arithmetic number, because the mean of its divisors is an integer number (606105500086).

Almost surely, 2^{1212211000171} is an apocalyptic number.

1212211000171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212211000171 is an equidigital number, since it uses as much as digits as its factorization.

1212211000171 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 19.

Adding to 1212211000171 its reverse (1710001122121), we get a palindrome (2922212122292).

The spelling of 1212211000171 in words is "one trillion, two hundred twelve billion, two hundred eleven million, one hundred seventy-one", and thus it is an aban number.