12241214221 has 4 divisors (see below), whose sum is σ = 12243986272. Its totient is φ = 12238442172.

The previous prime is 12241214179. The next prime is 12241214231.

12241214221 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 12241214221 - 2²¹ = 12239117069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12241214192 and 12241214201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12241214231) 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, 1379391 + ... + 1388236.

It is an arithmetic number, because the mean of its divisors is an integer number (3060996568).

Almost surely, 2^12241214221 is an apocalyptic number.

It is an amenable number.

12241214221 is a deficient number, since it is larger than the sum of its proper divisors (2772051).

12241214221 is an equidigital number, since it uses as much as digits as its factorization.

12241214221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2772050.

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

The spelling of 12241214221 in words is "twelve billion, two hundred forty-one million, two hundred fourteen thousand, two hundred twenty-one".