12244244221 has 12 divisors (see below), whose sum is σ = 13533760800. Its totient is φ = 11068926440.

The previous prime is 12244244219. The next prime is 12244244231.

It is a happy number.

12244244221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12244244221 - 2¹ = 12244244219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12244244221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12244244231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 261001 + ... + 304318.

It is an arithmetic number, because the mean of its divisors is an integer number (1127813400).

Almost surely, 2^12244244221 is an apocalyptic number.

12244244221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12244244221 is a deficient number, since it is larger than the sum of its proper divisors (1289516579).

12244244221 is a wasteful number, since it uses less digits than its factorization.

12244244221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565520 (or 565509 counting only the distinct ones).

The product of its digits is 8192, while the sum is 28.

The spelling of 12244244221 in words is "twelve billion, two hundred forty-four million, two hundred forty-four thousand, two hundred twenty-one".