12444423222 has 64 divisors (see below), whose sum is σ = 31256907264. Its totient is φ = 3208707840.

The previous prime is 12444423221. The next prime is 12444423259. The reversal of 12444423222 is 22232444421.

It is a happy number.

It is a super-2 number, since 2×12444423222² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12444423222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12444423221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35013 + ... + 161600.

It is an arithmetic number, because the mean of its divisors is an integer number (488389176).

Almost surely, 2^12444423222 is an apocalyptic number.

12444423222 is an abundant number, since it is smaller than the sum of its proper divisors (18812484042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12444423222 is a wasteful number, since it uses less digits than its factorization.

12444423222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196773.

The product of its digits is 24576, while the sum is 30.

Adding to 12444423222 its reverse (22232444421), we get a palindrome (34676867643).

The spelling of 12444423222 in words is "twelve billion, four hundred forty-four million, four hundred twenty-three thousand, two hundred twenty-two".