12420444012 has 48 divisors (see below), whose sum is σ = 30042593280. Its totient is φ = 3990589632.

The previous prime is 12420443999. The next prime is 12420444041. The reversal of 12420444012 is 21044402421.

It is a super-2 number, since 2×12420444012² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83212 + ... + 178227.

It is an arithmetic number, because the mean of its divisors is an integer number (625887360).

Almost surely, 2^12420444012 is an apocalyptic number.

12420444012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12420444012 is an abundant number, since it is smaller than the sum of its proper divisors (17622149268).

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

12420444012 is a wasteful number, since it uses less digits than its factorization.

12420444012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261590 (or 261588 counting only the distinct ones).

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

Adding to 12420444012 its reverse (21044402421), we get a palindrome (33464846433).

It can be divided in two parts, 12 and 420444012, that added together give a palindrome (420444024).

The spelling of 12420444012 in words is "twelve billion, four hundred twenty million, four hundred forty-four thousand, twelve".