12223232221 has 4 divisors (see below), whose sum is σ = 12319478272. Its totient is φ = 12126986172.

The previous prime is 12223232179. The next prime is 12223232257.

12223232221 is nontrivially palindromic in base 10.

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.

It is a cyclic number.

It is not a de Polignac number, because 12223232221 - 2²⁷ = 12089014493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12223232192 and 12223232201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12223232291) 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, 48122835 + ... + 48123088.

It is an arithmetic number, because the mean of its divisors is an integer number (3079869568).

Almost surely, 2^12223232221 is an apocalyptic number.

It is an amenable number.

12223232221 is a deficient number, since it is larger than the sum of its proper divisors (96246051).

12223232221 is an equidigital number, since it uses as much as digits as its factorization.

12223232221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96246050.

The product of its digits is 1152, while the sum is 22.

The spelling of 12223232221 in words is "twelve billion, two hundred twenty-three million, two hundred thirty-two thousand, two hundred twenty-one".