1001201102171 has 2 divisors, whose sum is σ = 1001201102172. Its totient is φ = 1001201102170.

The previous prime is 1001201102141. The next prime is 1001201102179. The reversal of 1001201102171 is 1712011021001.

It is a strong prime.

It is an emirp because it is prime and its reverse (1712011021001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001201102171 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1001201102179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500600551085 + 500600551086.

It is an arithmetic number, because the mean of its divisors is an integer number (500600551086).

Almost surely, 2^{1001201102171} is an apocalyptic number.

1001201102171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001201102171 is an equidigital number, since it uses as much as digits as its factorization.

1001201102171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28, while the sum is 17.

Adding to 1001201102171 its reverse (1712011021001), we get a palindrome (2713212123172).

The spelling of 1001201102171 in words is "one trillion, one billion, two hundred one million, one hundred two thousand, one hundred seventy-one".