12242215 has 4 divisors (see below), whose sum is σ = 14690664. Its totient is φ = 9793768.

The previous prime is 12242203. The next prime is 12242221. The reversal of 12242215 is 51224221.

12242215 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 not a de Polignac number, because 12242215 - 2⁹ = 12241703 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12242192 and 12242201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1224217 + ... + 1224226.

It is an arithmetic number, because the mean of its divisors is an integer number (3672666).

Almost surely, 2^12242215 is an apocalyptic number.

12242215 is a deficient number, since it is larger than the sum of its proper divisors (2448449).

12242215 is an equidigital number, since it uses as much as digits as its factorization.

12242215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2448448.

The product of its digits is 320, while the sum is 19.

The square root of 12242215 is about 3498.8876803922. The cubic root of 12242215 is about 230.4729712662.

Adding to 12242215 its reverse (51224221), we get a palindrome (63466436).

The spelling of 12242215 in words is "twelve million, two hundred forty-two thousand, two hundred fifteen".