12243034221 has 24 divisors (see below), whose sum is σ = 17987047680. Its totient is φ = 7401789120.

The previous prime is 12243034201. The next prime is 12243034253.

It is a happy number.

12243034221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12243034221 - 2⁵ = 12243034189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12243034191 and 12243034200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12243034201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107236 + ... + 189698.

It is an arithmetic number, because the mean of its divisors is an integer number (749460320).

Almost surely, 2^12243034221 is an apocalyptic number.

12243034221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12243034221 is a deficient number, since it is larger than the sum of its proper divisors (5744013459).

12243034221 is a wasteful number, since it uses less digits than its factorization.

12243034221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82897 (or 82886 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

It can be divided in two parts, 122430 and 34221, that added together give a palindrome (156651).

The spelling of 12243034221 in words is "twelve billion, two hundred forty-three million, thirty-four thousand, two hundred twenty-one".