12212527 has 4 divisors (see below), whose sum is σ = 12472416. Its totient is φ = 11952640.

The previous prime is 12212521. The next prime is 12212539. The reversal of 12212527 is 72521221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72521221 = 37 ⋅1960033.

It is a cyclic number.

It is not a de Polignac number, because 12212527 - 2⁷ = 12212399 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12212498 and 12212507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212521) 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, 129874 + ... + 129967.

It is an arithmetic number, because the mean of its divisors is an integer number (3118104).

Almost surely, 2^12212527 is an apocalyptic number.

12212527 is a deficient number, since it is larger than the sum of its proper divisors (259889).

12212527 is an equidigital number, since it uses as much as digits as its factorization.

12212527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259888.

The product of its digits is 560, while the sum is 22.

The square root of 12212527 is about 3494.6426140594. The cubic root of 12212527 is about 230.2865175349.

Adding to 12212527 its reverse (72521221), we get a palindrome (84733748).

The spelling of 12212527 in words is "twelve million, two hundred twelve thousand, five hundred twenty-seven".