12241412221 has 4 divisors (see below), whose sum is σ = 12323569500. Its totient is φ = 12159254944.

The previous prime is 12241412219. The next prime is 12241412243. The reversal of 12241412221 is 12221414221.

12241412221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12221414221 = 103 ⋅118654507.

It can be written as a sum of positive squares in 2 ways, for example, as 4371060996 + 7870351225 = 66114^2 + 88715^2 .

It is a cyclic number.

It is not a de Polignac number, because 12241412221 - 2¹ = 12241412219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12241412192 and 12241412201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12241412251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41078416 + ... + 41078713.

It is an arithmetic number, because the mean of its divisors is an integer number (3080892375).

Almost surely, 2^12241412221 is an apocalyptic number.

It is an amenable number.

12241412221 is a deficient number, since it is larger than the sum of its proper divisors (82157279).

12241412221 is an equidigital number, since it uses as much as digits as its factorization.

12241412221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82157278.

The product of its digits is 512, while the sum is 22.

Adding to 12241412221 its reverse (12221414221), we get a palindrome (24462826442).

The spelling of 12241412221 in words is "twelve billion, two hundred forty-one million, four hundred twelve thousand, two hundred twenty-one".