12421224266 has 48 divisors (see below), whose sum is σ = 20962103400. Its totient is φ = 5513988480.

The previous prime is 12421224259. The next prime is 12421224289. The reversal of 12421224266 is 66242212421.

It can be written as a sum of positive squares in 4 ways, for example, as 11010095041 + 1411129225 = 104929^2 + 37565^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2935040 + ... + 2939268.

Almost surely, 2^12421224266 is an apocalyptic number.

12421224266 is a deficient number, since it is larger than the sum of its proper divisors (8540879134).

12421224266 is a wasteful number, since it uses less digits than its factorization.

12421224266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4535 (or 4524 counting only the distinct ones).

The product of its digits is 18432, while the sum is 32.

Adding to 12421224266 its reverse (66242212421), we get a palindrome (78663436687).

The spelling of 12421224266 in words is "twelve billion, four hundred twenty-one million, two hundred twenty-four thousand, two hundred sixty-six".