12212503 has 2 divisors, whose sum is σ = 12212504. Its totient is φ = 12212502.

The previous prime is 12212483. The next prime is 12212507. The reversal of 12212503 is 30521221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12212503 - 2²¹ = 10115351 is a prime.

It is equal to p₈₀₁₀₆₁ and since 12212503 and 801061 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12212507) 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 as a sum of consecutive naturals, namely, 6106251 + 6106252.

It is an arithmetic number, because the mean of its divisors is an integer number (6106252).

Almost surely, 2^12212503 is an apocalyptic number.

12212503 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212503 is an equidigital number, since it uses as much as digits as its factorization.

12212503 is an odious number, because the sum of its binary digits is odd.

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

The square root of 12212503 is about 3494.6391802302. The cubic root of 12212503 is about 230.2863666822.

Adding to 12212503 its reverse (30521221), we get a palindrome (42733724).

The spelling of 12212503 in words is "twelve million, two hundred twelve thousand, five hundred three".