1212102100171 has 2 divisors, whose sum is σ = 1212102100172. Its totient is φ = 1212102100170.

The previous prime is 1212102100151. The next prime is 1212102100271. The reversal of 1212102100171 is 1710012012121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212102100171 - 2⁷ = 1212102100043 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212102100141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606051050085 + 606051050086.

It is an arithmetic number, because the mean of its divisors is an integer number (606051050086).

Almost surely, 2^{1212102100171} is an apocalyptic number.

1212102100171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212102100171 is an equidigital number, since it uses as much as digits as its factorization.

1212102100171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 19.

Adding to 1212102100171 its reverse (1710012012121), we get a palindrome (2922114112292).

The spelling of 1212102100171 in words is "one trillion, two hundred twelve billion, one hundred two million, one hundred thousand, one hundred seventy-one".