12421211022 has 96 divisors (see below), whose sum is σ = 30211743744. Its totient is φ = 3655108800.

The previous prime is 12421211021. The next prime is 12421211029. The reversal of 12421211022 is 22011212421.

12421211022 is a `hidden beast` number, since 12 + 421 + 211 + 0 + 22 = 666.

12421211022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12421210986 and 12421211004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12421211021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4621363 + ... + 4624049.

It is an arithmetic number, because the mean of its divisors is an integer number (314705664).

Almost surely, 2^12421211022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12421211022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15105871872).

12421211022 is an abundant number, since it is smaller than the sum of its proper divisors (17790532722).

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

12421211022 is a wasteful number, since it uses less digits than its factorization.

12421211022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3374 (or 3371 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12421211022 its reverse (22011212421), we get a palindrome (34432423443).

The spelling of 12421211022 in words is "twelve billion, four hundred twenty-one million, two hundred eleven thousand, twenty-two".