12440421204 has 12 divisors (see below), whose sum is σ = 29027649504. Its totient is φ = 4146807064.

The previous prime is 12440421197. The next prime is 12440421283. The reversal of 12440421204 is 40212404421.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 518350872 + ... + 518350895.

It is an arithmetic number, because the mean of its divisors is an integer number (2418970792).

Almost surely, 2^12440421204 is an apocalyptic number.

It is an amenable number.

12440421204 is an abundant number, since it is smaller than the sum of its proper divisors (16587228300).

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

12440421204 is a wasteful number, since it uses less digits than its factorization.

12440421204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036701774 (or 1036701772 counting only the distinct ones).

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

Adding to 12440421204 its reverse (40212404421), we get a palindrome (52652825625).

The spelling of 12440421204 in words is "twelve billion, four hundred forty million, four hundred twenty-one thousand, two hundred four".