12213242 has 16 divisors (see below), whose sum is σ = 19647360. Its totient is φ = 5673408.

The previous prime is 12213241. The next prime is 12213251. The reversal of 12213242 is 24231221.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 12213242.

It is not an unprimeable number, because it can be changed into a prime (12213241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413 + ... + 4959.

It is an arithmetic number, because the mean of its divisors is an integer number (1227960).

Almost surely, 2^12213242 is an apocalyptic number.

12213242 is a deficient number, since it is larger than the sum of its proper divisors (7434118).

12213242 is a wasteful number, since it uses less digits than its factorization.

12213242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4645.

The product of its digits is 192, while the sum is 17.

The square root of 12213242 is about 3494.7449120072. The cubic root of 12213242 is about 230.2910115993.

Adding to 12213242 its reverse (24231221), we get a palindrome (36444463).

The spelling of 12213242 in words is "twelve million, two hundred thirteen thousand, two hundred forty-two".