12421224124 has 12 divisors (see below), whose sum is σ = 21981380400. Its totient is φ = 6140829728.

The previous prime is 12421224121. The next prime is 12421224133. The reversal of 12421224124 is 42142212421.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12421224121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17445184 + ... + 17445895.

It is an arithmetic number, because the mean of its divisors is an integer number (1831781700).

Almost surely, 2^12421224124 is an apocalyptic number.

It is an amenable number.

12421224124 is a deficient number, since it is larger than the sum of its proper divisors (9560156276).

12421224124 is a wasteful number, since it uses less digits than its factorization.

12421224124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34891172 (or 34891170 counting only the distinct ones).

The product of its digits is 2048, while the sum is 25.

Adding to 12421224124 its reverse (42142212421), we get a palindrome (54563436545).

The spelling of 12421224124 in words is "twelve billion, four hundred twenty-one million, two hundred twenty-four thousand, one hundred twenty-four".