12021334424 has 16 divisors (see below), whose sum is σ = 24589093320. Its totient is φ = 5464242880.

The previous prime is 12021334421. The next prime is 12021334427. The reversal of 12021334424 is 42443312021.

It is an interprime number because it is at equal distance from previous prime (12021334421) and next prime (12021334427).

It is a junction number, because it is equal to n+sod(n) for n = 12021334393 and 12021334402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021334421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68302949 + ... + 68303124.

Almost surely, 2^12021334424 is an apocalyptic number.

It is an amenable number.

12021334424 is an abundant number, since it is smaller than the sum of its proper divisors (12567758896).

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

12021334424 is a wasteful number, since it uses less digits than its factorization.

12021334424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136606090 (or 136606086 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 12021334424 its reverse (42443312021), we get a palindrome (54464646445).

The spelling of 12021334424 in words is "twelve billion, twenty-one million, three hundred thirty-four thousand, four hundred twenty-four".