12961171 has 4 divisors (see below), whose sum is σ = 13018000. Its totient is φ = 12904344.

The previous prime is 12961163. The next prime is 12961177. The reversal of 12961171 is 17116921.

12961171 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, and also an emirpimes, since its reverse is a distinct semiprime: 17116921 = 4019 ⋅4259.

It is a cyclic number.

It is not a de Polignac number, because 12961171 - 2³ = 12961163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12961177) 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, 28071 + ... + 28528.

It is an arithmetic number, because the mean of its divisors is an integer number (3254500).

Almost surely, 2^12961171 is an apocalyptic number.

12961171 is a deficient number, since it is larger than the sum of its proper divisors (56829).

12961171 is an equidigital number, since it uses as much as digits as its factorization.

12961171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56828.

The product of its digits is 756, while the sum is 28.

The square root of 12961171 is about 3600.1626352152. The cubic root of 12961171 is about 234.8991328096.

The spelling of 12961171 in words is "twelve million, nine hundred sixty-one thousand, one hundred seventy-one".