12513211 has 4 divisors (see below), whose sum is σ = 12558024. Its totient is φ = 12468400.

The previous prime is 12513209. The next prime is 12513227. The reversal of 12513211 is 11231521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12513211 - 2¹ = 12513209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12513271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21985 + ... + 22546.

It is an arithmetic number, because the mean of its divisors is an integer number (3139506).

Almost surely, 2^12513211 is an apocalyptic number.

12513211 is a deficient number, since it is larger than the sum of its proper divisors (44813).

12513211 is an equidigital number, since it uses as much as digits as its factorization.

12513211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44812.

The product of its digits is 60, while the sum is 16.

The square root of 12513211 is about 3537.4017300838. The cubic root of 12513211 is about 232.1611729341.

Adding to 12513211 its reverse (11231521), we get a palindrome (23744732).

The spelling of 12513211 in words is "twelve million, five hundred thirteen thousand, two hundred eleven".