201101012171 has 2 divisors, whose sum is σ = 201101012172. Its totient is φ = 201101012170.

The previous prime is 201101012153. The next prime is 201101012221. The reversal of 201101012171 is 171210101102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201101012171 - 2¹⁴ = 201100995787 is a prime.

It is not a weakly prime, because it can be changed into another prime (201101012471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100550506085 + 100550506086.

It is an arithmetic number, because the mean of its divisors is an integer number (100550506086).

Almost surely, 2^201101012171 is an apocalyptic number.

201101012171 is a deficient number, since it is larger than the sum of its proper divisors (1).

201101012171 is an equidigital number, since it uses as much as digits as its factorization.

201101012171 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 201101012171 its reverse (171210101102), we get a palindrome (372311113273).

The spelling of 201101012171 in words is "two hundred one billion, one hundred one million, twelve thousand, one hundred seventy-one".