12530021 has 8 divisors (see below), whose sum is σ = 14454720. Its totient is φ = 10639008.

The previous prime is 12530017. The next prime is 12530027. The reversal of 12530021 is 12003521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12530021 - 2² = 12530017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12529978 and 12530005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12530027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7616 + ... + 9113.

It is an arithmetic number, because the mean of its divisors is an integer number (1806840).

Almost surely, 2^12530021 is an apocalyptic number.

It is an amenable number.

12530021 is a deficient number, since it is larger than the sum of its proper divisors (1924699).

12530021 is a wasteful number, since it uses less digits than its factorization.

12530021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16843.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 12530021 is about 3539.7769703754. The cubic root of 12530021 is about 232.2650866578.

Adding to 12530021 its reverse (12003521), we get a palindrome (24533542).

The spelling of 12530021 in words is "twelve million, five hundred thirty thousand, twenty-one".