12212422444 has 24 divisors (see below), whose sum is σ = 22509393200. Its totient is φ = 5781533760.

The previous prime is 12212422429. The next prime is 12212422477. The reversal of 12212422444 is 44422421221.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91054 + ... + 180874.

Almost surely, 2^12212422444 is an apocalyptic number.

It is an amenable number.

12212422444 is a deficient number, since it is larger than the sum of its proper divisors (10296970756).

12212422444 is a wasteful number, since it uses less digits than its factorization.

12212422444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91633 (or 91631 counting only the distinct ones).

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

Adding to 12212422444 its reverse (44422421221), we get a palindrome (56634843665).

The spelling of 12212422444 in words is "twelve billion, two hundred twelve million, four hundred twenty-two thousand, four hundred forty-four".