12146223 has 4 divisors (see below), whose sum is σ = 16194968. Its totient is φ = 8097480.

The previous prime is 12146221. The next prime is 12146287. The reversal of 12146223 is 32264121.

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

It is not a de Polignac number, because 12146223 - 2¹ = 12146221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12146223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12146221) 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, 2024368 + ... + 2024373.

It is an arithmetic number, because the mean of its divisors is an integer number (4048742).

Almost surely, 2^12146223 is an apocalyptic number.

12146223 is a deficient number, since it is larger than the sum of its proper divisors (4048745).

12146223 is an equidigital number, since it uses as much as digits as its factorization.

12146223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4048744.

The product of its digits is 576, while the sum is 21.

The square root of 12146223 is about 3485.1431821376. The cubic root of 12146223 is about 229.8690054325.

The spelling of 12146223 in words is "twelve million, one hundred forty-six thousand, two hundred twenty-three".