12162071 has 4 divisors (see below), whose sum is σ = 12802200. Its totient is φ = 11521944.

The previous prime is 12162067. The next prime is 12162079. The reversal of 12162071 is 17026121.

12162071 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 a cyclic number.

It is not a de Polignac number, because 12162071 - 2² = 12162067 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12162079) 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, 320036 + ... + 320073.

It is an arithmetic number, because the mean of its divisors is an integer number (3200550).

Almost surely, 2^12162071 is an apocalyptic number.

12162071 is a deficient number, since it is larger than the sum of its proper divisors (640129).

12162071 is an equidigital number, since it uses as much as digits as its factorization.

12162071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640128.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 12162071 is about 3487.4160921806. The cubic root of 12162071 is about 229.9689372038.

Adding to 12162071 its reverse (17026121), we get a palindrome (29188192).

The spelling of 12162071 in words is "twelve million, one hundred sixty-two thousand, seventy-one".