12171061062171 has 72 divisors (see below), whose sum is σ = 20574878480208. Its totient is φ = 6873755520000.

The previous prime is 12171061062169. The next prime is 12171061062217. The reversal of 12171061062171 is 17126016017121.

12171061062171 is a `hidden beast` number, since 1 + 2 + 1 + 7 + 10 + 6 + 10 + 621 + 7 + 1 = 666.

12171061062171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12171061062171 - 2¹ = 12171061062169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12171061062151) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 783781 + ... + 4995641.

It is an arithmetic number, because the mean of its divisors is an integer number (285762201114).

Almost surely, 2^{12171061062171} is an apocalyptic number.

12171061062171 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12171061062171 is a deficient number, since it is larger than the sum of its proper divisors (8403817418037).

12171061062171 is a wasteful number, since it uses less digits than its factorization.

12171061062171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4212013 (or 4211993 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 36.

Adding to 12171061062171 its reverse (17126016017121), we get a palindrome (29297077079292).

The spelling of 12171061062171 in words is "twelve trillion, one hundred seventy-one billion, sixty-one million, sixty-two thousand, one hundred seventy-one".