12106571 has 4 divisors (see below), whose sum is σ = 12119712. Its totient is φ = 12093432.

The previous prime is 12106561. The next prime is 12106573. The reversal of 12106571 is 17560121.

12106571 is digitally balanced in base 3, 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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12106571 is a prime.

It is a super-2 number, since 2×12106571² = 293138122756082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12106573) 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, 5075 + ... + 7068.

It is an arithmetic number, because the mean of its divisors is an integer number (3029928).

Almost surely, 2^12106571 is an apocalyptic number.

12106571 is a deficient number, since it is larger than the sum of its proper divisors (13141).

12106571 is an equidigital number, since it uses as much as digits as its factorization.

12106571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13140.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 12106571 is about 3479.4498128296. The cubic root of 12106571 is about 229.6185928178.

Adding to 12106571 its reverse (17560121), we get a palindrome (29666692).

The spelling of 12106571 in words is "twelve million, one hundred six thousand, five hundred seventy-one".