12420212244 has 96 divisors (see below), whose sum is σ = 33881573376. Its totient is φ = 3502730880.

The previous prime is 12420212227. The next prime is 12420212251. The reversal of 12420212244 is 44221202421.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57049 + ... + 167615.

It is an arithmetic number, because the mean of its divisors is an integer number (352933056).

Almost surely, 2^12420212244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12420212244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16940786688).

12420212244 is an abundant number, since it is smaller than the sum of its proper divisors (21461361132).

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

12420212244 is a wasteful number, since it uses less digits than its factorization.

12420212244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110645 (or 110643 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 12420212244 its reverse (44221202421), we get a palindrome (56641414665).

The spelling of 12420212244 in words is "twelve billion, four hundred twenty million, two hundred twelve thousand, two hundred forty-four".