12421044246 has 64 divisors (see below), whose sum is σ = 28136521728. Its totient is φ = 3626840448.

The previous prime is 12421044191. The next prime is 12421044247. The reversal of 12421044246 is 64244012421.

It is a super-2 number, since 2×12421044246² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12421044247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 200580 + ... + 255096.

It is an arithmetic number, because the mean of its divisors is an integer number (439633152).

Almost surely, 2^12421044246 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12421044246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14068260864).

12421044246 is an abundant number, since it is smaller than the sum of its proper divisors (15715477482).

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

12421044246 is a wasteful number, since it uses less digits than its factorization.

12421044246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54685.

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 12421044246 its reverse (64244012421), we get a palindrome (76665056667).

The spelling of 12421044246 in words is "twelve billion, four hundred twenty-one million, forty-four thousand, two hundred forty-six".