12240215 has 8 divisors (see below), whose sum is σ = 15818208. Its totient is φ = 9038880.

The previous prime is 12240203. The next prime is 12240223. The reversal of 12240215 is 51204221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12240215 - 2⁸ = 12239959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12240193 and 12240202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94091 + ... + 94220.

It is an arithmetic number, because the mean of its divisors is an integer number (1977276).

Almost surely, 2^12240215 is an apocalyptic number.

12240215 is a deficient number, since it is larger than the sum of its proper divisors (3577993).

12240215 is a wasteful number, since it uses less digits than its factorization.

12240215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188329.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 12240215 is about 3498.6018636021. The cubic root of 12240215 is about 230.4604198598.

Adding to 12240215 its reverse (51204221), we get a palindrome (63444436).

The spelling of 12240215 in words is "twelve million, two hundred forty thousand, two hundred fifteen".