12522197 has 4 divisors (see below), whose sum is σ = 13181280. Its totient is φ = 11863116.

The previous prime is 12522193. The next prime is 12522221. The reversal of 12522197 is 79122521.

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, and also an emirpimes, since its reverse is a distinct semiprime: 79122521 = 181 ⋅437141.

It is a cyclic number.

It is not a de Polignac number, because 12522197 - 2² = 12522193 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 (12522193) 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, 329513 + ... + 329550.

It is an arithmetic number, because the mean of its divisors is an integer number (3295320).

Almost surely, 2^12522197 is an apocalyptic number.

It is an amenable number.

12522197 is a deficient number, since it is larger than the sum of its proper divisors (659083).

12522197 is an equidigital number, since it uses as much as digits as its factorization.

12522197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659082.

The product of its digits is 2520, while the sum is 29.

The square root of 12522197 is about 3538.6716434278. The cubic root of 12522197 is about 232.2167329104.

It can be divided in two parts, 125 and 22197, that added together give a palindrome (22322).

The spelling of 12522197 in words is "twelve million, five hundred twenty-two thousand, one hundred ninety-seven".