12229529 has 4 divisors (see below), whose sum is σ = 13170276. Its totient is φ = 11288784.

The previous prime is 12229523. The next prime is 12229549. The reversal of 12229529 is 92592221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92592221 = 269 ⋅344209.

It can be written as a sum of positive squares in 2 ways, for example, as 4721929 + 7507600 = 2173^2 + 2740^2 .

It is not a de Polignac number, because 12229529 - 2⁴ = 12229513 is a prime.

It is a super-2 number, since 2×12229529² = 299122759123682, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12229495 and 12229504.

It is not an unprimeable number, because it can be changed into a prime (12229523) 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, 470354 + ... + 470379.

It is an arithmetic number, because the mean of its divisors is an integer number (3292569).

Almost surely, 2^12229529 is an apocalyptic number.

It is an amenable number.

12229529 is a deficient number, since it is larger than the sum of its proper divisors (940747).

12229529 is an equidigital number, since it uses as much as digits as its factorization.

12229529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940746.

The product of its digits is 6480, while the sum is 32.

The square root of 12229529 is about 3497.0743486520. The cubic root of 12229529 is about 230.3933345169.

The spelling of 12229529 in words is "twelve million, two hundred twenty-nine thousand, five hundred twenty-nine".