12204442420 has 12 divisors (see below), whose sum is σ = 25629329124. Its totient is φ = 4881776960.

The previous prime is 12204442403. The next prime is 12204442457. The reversal of 12204442420 is 2424440221.

It can be written as a sum of positive squares in 2 ways, for example, as 1967454736 + 10236987684 = 44356^2 + 101178^2 .

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, 305111041 + ... + 305111080.

It is an arithmetic number, because the mean of its divisors is an integer number (2135777427).

Almost surely, 2^12204442420 is an apocalyptic number.

12204442420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12204442420 is an abundant number, since it is smaller than the sum of its proper divisors (13424886704).

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

12204442420 is a wasteful number, since it uses less digits than its factorization.

12204442420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610222130 (or 610222128 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 12204442420 its reverse (2424440221), we get a palindrome (14628882641).

The spelling of 12204442420 in words is "twelve billion, two hundred four million, four hundred forty-two thousand, four hundred twenty".