12502221 has 4 divisors (see below), whose sum is σ = 16669632. Its totient is φ = 8334812.

The previous prime is 12502187. The next prime is 12502229. The reversal of 12502221 is 12220521.

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 not a de Polignac number, because 12502221 - 2⁷ = 12502093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12502221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12502229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2083701 + ... + 2083706.

It is an arithmetic number, because the mean of its divisors is an integer number (4167408).

Almost surely, 2^12502221 is an apocalyptic number.

It is an amenable number.

12502221 is a deficient number, since it is larger than the sum of its proper divisors (4167411).

12502221 is an equidigital number, since it uses as much as digits as its factorization.

12502221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4167410.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 12502221 is about 3535.8479888140. The cubic root of 12502221 is about 232.0931861584.

Adding to 12502221 its reverse (12220521), we get a palindrome (24722742).

The spelling of 12502221 in words is "twelve million, five hundred two thousand, two hundred twenty-one".