12521203 has 2 divisors, whose sum is σ = 12521204. Its totient is φ = 12521202.

The previous prime is 12521189. The next prime is 12521219. The reversal of 12521203 is 30212521.

It is an a-pointer prime, because the next prime (12521219) can be obtained adding 12521203 to its sum of digits (16).

It is a weak prime.

It is an emirp because it is prime and its reverse (30212521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12521203 - 2⁹ = 12520691 is a prime.

It is not a weakly prime, because it can be changed into another prime (12521233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6260601 + 6260602.

It is an arithmetic number, because the mean of its divisors is an integer number (6260602).

Almost surely, 2^12521203 is an apocalyptic number.

12521203 is a deficient number, since it is larger than the sum of its proper divisors (1).

12521203 is an equidigital number, since it uses as much as digits as its factorization.

12521203 is an evil number, because the sum of its binary digits is even.

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

The square root of 12521203 is about 3538.5311924582. The cubic root of 12521203 is about 232.2105883672.

Adding to 12521203 its reverse (30212521), we get a palindrome (42733724).

The spelling of 12521203 in words is "twelve million, five hundred twenty-one thousand, two hundred three".