20112321424 has 40 divisors (see below), whose sum is σ = 41976422712. Its totient is φ = 9280112640.

The previous prime is 20112321421. The next prime is 20112321431. The reversal of 20112321424 is 42412321102.

It can be written as a sum of positive squares in 4 ways, for example, as 5832071424 + 14280250000 = 76368^2 + 119500^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20112321395 and 20112321404.

It is not an unprimeable number, because it can be changed into a prime (20112321421) 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 7 ways as a sum of consecutive naturals, for example, 923784 + ... + 945304.

Almost surely, 2^20112321424 is an apocalyptic number.

It is an amenable number.

20112321424 is an abundant number, since it is smaller than the sum of its proper divisors (21864101288).

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

20112321424 is a wasteful number, since it uses less digits than its factorization.

20112321424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26035 (or 26029 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 20112321424 its reverse (42412321102), we get a palindrome (62524642526).

The spelling of 20112321424 in words is "twenty billion, one hundred twelve million, three hundred twenty-one thousand, four hundred twenty-four".