12523212 has 36 divisors (see below), whose sum is σ = 34092240. Its totient is φ = 3853152.

The previous prime is 12523183. The next prime is 12523219. The reversal of 12523212 is 21232521.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12523219) 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, 12912 + ... + 13847.

Almost surely, 2^12523212 is an apocalyptic number.

12523212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12523212 is an abundant number, since it is smaller than the sum of its proper divisors (21569028).

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

12523212 is a wasteful number, since it uses less digits than its factorization.

12523212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26782 (or 26777 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 12523212 is about 3538.8150559191. The cubic root of 12523212 is about 232.2230069323.

Adding to 12523212 its reverse (21232521), we get a palindrome (33755733).

The spelling of 12523212 in words is "twelve million, five hundred twenty-three thousand, two hundred twelve".