12270215 has 4 divisors (see below), whose sum is σ = 14724264. Its totient is φ = 9816168.

The previous prime is 12270197. The next prime is 12270217. The reversal of 12270215 is 51207221.

12270215 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 12270215 - 2²² = 8075911 is a prime.

It is a super-2 number, since 2×12270215² = 301116352292450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12270217) 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, 1227017 + ... + 1227026.

It is an arithmetic number, because the mean of its divisors is an integer number (3681066).

Almost surely, 2^12270215 is an apocalyptic number.

12270215 is a deficient number, since it is larger than the sum of its proper divisors (2454049).

12270215 is an equidigital number, since it uses as much as digits as its factorization.

12270215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2454048.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 12270215 is about 3502.8866667365. The cubic root of 12270215 is about 230.6485475965.

Adding to 12270215 its reverse (51207221), we get a palindrome (63477436).

The spelling of 12270215 in words is "twelve million, two hundred seventy thousand, two hundred fifteen".