12520213 has 4 divisors (see below), whose sum is σ = 12732480. Its totient is φ = 12307948.

The previous prime is 12520201. The next prime is 12520217. The reversal of 12520213 is 31202521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12520213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12520217) 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 3 ways as a sum of consecutive naturals, for example, 106045 + ... + 106162.

It is an arithmetic number, because the mean of its divisors is an integer number (3183120).

Almost surely, 2^12520213 is an apocalyptic number.

It is an amenable number.

12520213 is a deficient number, since it is larger than the sum of its proper divisors (212267).

12520213 is an equidigital number, since it uses as much as digits as its factorization.

12520213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212266.

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

The square root of 12520213 is about 3538.3913011424. The cubic root of 12520213 is about 232.2044682273.

Adding to 12520213 its reverse (31202521), we get a palindrome (43722734).

The spelling of 12520213 in words is "twelve million, five hundred twenty thousand, two hundred thirteen".