12520233 has 18 divisors (see below), whose sum is σ = 19880042. Its totient is φ = 7587360.

The previous prime is 12520219. The next prime is 12520237. The reversal of 12520233 is 33202521.

12520233 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11108889 + 1411344 = 3333^2 + 1188^2 .

It is not a de Polignac number, because 12520233 - 2⁴ = 12520217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12520237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4660 + ... + 6837.

Almost surely, 2^12520233 is an apocalyptic number.

It is an amenable number.

12520233 is a deficient number, since it is larger than the sum of its proper divisors (7359809).

12520233 is a wasteful number, since it uses less digits than its factorization.

12520233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11525 (or 11511 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 12520233 is about 3538.3941272843. The cubic root of 12520233 is about 232.2045918697.

Adding to 12520233 its reverse (33202521), we get a palindrome (45722754).

The spelling of 12520233 in words is "twelve million, five hundred twenty thousand, two hundred thirty-three".