12421222122 has 32 divisors (see below), whose sum is σ = 25594492032. Its totient is φ = 4015773504.

The previous prime is 12421222109. The next prime is 12421222129. The reversal of 12421222122 is 22122212421.

It is not an unprimeable number, because it can be changed into a prime (12421222129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17878 + ... + 158625.

It is an arithmetic number, because the mean of its divisors is an integer number (799827876).

Almost surely, 2^12421222122 is an apocalyptic number.

12421222122 is an abundant number, since it is smaller than the sum of its proper divisors (13173269910).

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

12421222122 is a wasteful number, since it uses less digits than its factorization.

12421222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176862.

The product of its digits is 512, while the sum is 21.

Adding to 12421222122 its reverse (22122212421), we get a palindrome (34543434543).

The spelling of 12421222122 in words is "twelve billion, four hundred twenty-one million, two hundred twenty-two thousand, one hundred twenty-two".