120201022100171 has 2 divisors, whose sum is σ = 120201022100172. Its totient is φ = 120201022100170.

The previous prime is 120201022100167. The next prime is 120201022100233. The reversal of 120201022100171 is 171001220102021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120201022100171 - 2² = 120201022100167 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (120201022102171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60100511050085 + 60100511050086.

It is an arithmetic number, because the mean of its divisors is an integer number (60100511050086).

Almost surely, 2^{120201022100171} is an apocalyptic number.

120201022100171 is a deficient number, since it is larger than the sum of its proper divisors (1).

120201022100171 is an equidigital number, since it uses as much as digits as its factorization.

120201022100171 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 20.

Adding to 120201022100171 its reverse (171001220102021), we get a palindrome (291202242202192).

The spelling of 120201022100171 in words is "one hundred twenty trillion, two hundred one billion, twenty-two million, one hundred thousand, one hundred seventy-one".