12012243 has 4 divisors (see below), whose sum is σ = 16016328. Its totient is φ = 8008160.

The previous prime is 12012197. The next prime is 12012257. The reversal of 12012243 is 34221021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34221021 = 3 ⋅11407007.

It is a cyclic number.

It is not a de Polignac number, because 12012243 - 2⁹ = 12011731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12012263) 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, 2002038 + ... + 2002043.

It is an arithmetic number, because the mean of its divisors is an integer number (4004082).

Almost surely, 2^12012243 is an apocalyptic number.

12012243 is a deficient number, since it is larger than the sum of its proper divisors (4004085).

12012243 is an equidigital number, since it uses as much as digits as its factorization.

12012243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4004084.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 12012243 is about 3465.8682894767. The cubic root of 12012243 is about 229.0206816940.

Adding to 12012243 its reverse (34221021), we get a palindrome (46233264).

The spelling of 12012243 in words is "twelve million, twelve thousand, two hundred forty-three".