12214520 has 16 divisors (see below), whose sum is σ = 27482760. Its totient is φ = 4885792.

The previous prime is 12214519. The next prime is 12214523. The reversal of 12214520 is 2541221.

12214520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12214523) 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, 152642 + ... + 152721.

Almost surely, 2^12214520 is an apocalyptic number.

12214520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12214520 is an abundant number, since it is smaller than the sum of its proper divisors (15268240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12214520 is a wasteful number, since it uses less digits than its factorization.

12214520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305374 (or 305370 counting only the distinct ones).

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

The square root of 12214520 is about 3494.9277531875. The cubic root of 12214520 is about 230.2990439096.

Adding to 12214520 its reverse (2541221), we get a palindrome (14755741).

The spelling of 12214520 in words is "twelve million, two hundred fourteen thousand, five hundred twenty".