12424311021 has 16 divisors (see below), whose sum is σ = 17022034944. Its totient is φ = 8056893744.

The previous prime is 12424311019. The next prime is 12424311041. The reversal of 12424311021 is 12011342421.

It is not a de Polignac number, because 12424311021 - 2¹ = 12424311019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12424311001) 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 15 ways as a sum of consecutive naturals, for example, 247311 + ... + 293276.

It is an arithmetic number, because the mean of its divisors is an integer number (1063877184).

Almost surely, 2^12424311021 is an apocalyptic number.

It is an amenable number.

12424311021 is a deficient number, since it is larger than the sum of its proper divisors (4597723923).

12424311021 is a wasteful number, since it uses less digits than its factorization.

12424311021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540800.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 12424311021 its reverse (12011342421), we get a palindrome (24435653442).

The spelling of 12424311021 in words is "twelve billion, four hundred twenty-four million, three hundred eleven thousand, twenty-one".