12424112021 has 4 divisors (see below), whose sum is σ = 12427531692. Its totient is φ = 12420692352.

The previous prime is 12424111993. The next prime is 12424112033. The reversal of 12424112021 is 12021142421.

12424112021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6774936100 + 5649175921 = 82310^2 + 75161^2 .

It is a cyclic number.

It is not a de Polignac number, because 12424112021 - 2⁶ = 12424111957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12424111984 and 12424112002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12424112621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1704380 + ... + 1711653.

It is an arithmetic number, because the mean of its divisors is an integer number (3106882923).

Almost surely, 2^12424112021 is an apocalyptic number.

It is an amenable number.

12424112021 is a deficient number, since it is larger than the sum of its proper divisors (3419671).

12424112021 is an equidigital number, since it uses as much as digits as its factorization.

12424112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3419670.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12424112021 its reverse (12021142421), we get a palindrome (24445254442).

The spelling of 12424112021 in words is "twelve billion, four hundred twenty-four million, one hundred twelve thousand, twenty-one".