12210225 has 24 divisors (see below), whose sum is σ = 20480832. Its totient is φ = 6417600.

The previous prime is 12210223. The next prime is 12210229. The reversal of 12210225 is 52201221.

It is not a de Polignac number, because 12210225 - 2¹ = 12210223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (12210221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4179 + ... + 6471.

It is an arithmetic number, because the mean of its divisors is an integer number (853368).

Almost surely, 2^12210225 is an apocalyptic number.

12210225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12210225 is a deficient number, since it is larger than the sum of its proper divisors (8270607).

12210225 is a wasteful number, since it uses less digits than its factorization.

12210225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2377 (or 2372 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 12210225 is about 3494.3132372471. The cubic root of 12210225 is about 230.2720473417.

Adding to 12210225 its reverse (52201221), we get a palindrome (64411446).

The spelling of 12210225 in words is "twelve million, two hundred ten thousand, two hundred twenty-five".