12212530 has 24 divisors (see below), whose sum is σ = 24165036. Its totient is φ = 4440480.

The previous prime is 12212521. The next prime is 12212539. The reversal of 12212530 is 3521221.

12212530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12212521) and next prime (12212539).

It can be written as a sum of positive squares in 2 ways, for example, as 12159169 + 53361 = 3487^2 + 231^2 .

It is not an unprimeable number, because it can be changed into a prime (12212539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3837 + ... + 6256.

Almost surely, 2^12212530 is an apocalyptic number.

12212530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12212530 is a deficient number, since it is larger than the sum of its proper divisors (11952506).

12212530 is a wasteful number, since it uses less digits than its factorization.

12212530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10122 (or 10111 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 12212530 is about 3494.6430432878. The cubic root of 12212530 is about 230.2865363915.

Adding to 12212530 its reverse (3521221), we get a palindrome (15733751).

The spelling of 12212530 in words is "twelve million, two hundred twelve thousand, five hundred thirty".