12222320008 has 16 divisors (see below), whose sum is σ = 22981775580. Its totient is φ = 6093846528.

The previous prime is 12222319999. The next prime is 12222320009. The reversal of 12222320008 is 80002322221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11091881124 + 1130438884 = 105318^2 + 33622^2 .

It is not an unprimeable number, because it can be changed into a prime (12222320009) 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, 2161185 + ... + 2166832.

Almost surely, 2^12222320008 is an apocalyptic number.

It is an amenable number.

12222320008 is a deficient number, since it is larger than the sum of its proper divisors (10759455572).

12222320008 is a wasteful number, since it uses less digits than its factorization.

12222320008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4328376 (or 4328372 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 12222320008 its reverse (80002322221), we get a palindrome (92224642229).

The spelling of 12222320008 in words is "twelve billion, two hundred twenty-two million, three hundred twenty thousand, eight".