2222172066171 has 4 divisors (see below), whose sum is σ = 2962896088232. Its totient is φ = 1481448044112.

The previous prime is 2222172066131. The next prime is 2222172066173. The reversal of 2222172066171 is 1716602712222.

It is a happy number.

2222172066171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2222172066171 - 2²⁵ = 2222138511739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2222172066173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370362011026 + ... + 370362011031.

It is an arithmetic number, because the mean of its divisors is an integer number (740724022058).

Almost surely, 2^{2222172066171} is an apocalyptic number.

2222172066171 is a deficient number, since it is larger than the sum of its proper divisors (740724022061).

2222172066171 is an equidigital number, since it uses as much as digits as its factorization.

2222172066171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740724022060.

The product of its (nonzero) digits is 56448, while the sum is 39.

Adding to 2222172066171 its reverse (1716602712222), we get a palindrome (3938774778393).

The spelling of 2222172066171 in words is "two trillion, two hundred twenty-two billion, one hundred seventy-two million, sixty-six thousand, one hundred seventy-one".