12421211222 has 16 divisors (see below), whose sum is σ = 21316448160. Its totient is φ = 5317640448.

The previous prime is 12421211171. The next prime is 12421211233. The reversal of 12421211222 is 22211212421.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12421211194 and 12421211203.

It is a congruent number.

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, 464513 + ... + 490524.

It is an arithmetic number, because the mean of its divisors is an integer number (1332278010).

Almost surely, 2^12421211222 is an apocalyptic number.

12421211222 is a deficient number, since it is larger than the sum of its proper divisors (8895236938).

12421211222 is an equidigital number, since it uses as much as digits as its factorization.

12421211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955975.

The product of its digits is 256, while the sum is 20.

Adding to 12421211222 its reverse (22211212421), we get a palindrome (34632423643).

The spelling of 12421211222 in words is "twelve billion, four hundred twenty-one million, two hundred eleven thousand, two hundred twenty-two".