20124421024 has 24 divisors (see below), whose sum is σ = 41950540548. Its totient is φ = 9470315520.

The previous prime is 20124421003. The next prime is 20124421043. The reversal of 20124421024 is 42012442102.

It can be written as a sum of positive squares in 2 ways, for example, as 19104768400 + 1019652624 = 138220^2 + 31932^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20124420986 and 20124421004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18496167 + ... + 18497254.

Almost surely, 2^20124421024 is an apocalyptic number.

It is an amenable number.

20124421024 is an abundant number, since it is smaller than the sum of its proper divisors (21826119524).

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

20124421024 is a wasteful number, since it uses less digits than its factorization.

20124421024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36993448 (or 36993440 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 20124421024 its reverse (42012442102), we get a palindrome (62136863126).

The spelling of 20124421024 in words is "twenty billion, one hundred twenty-four million, four hundred twenty-one thousand, twenty-four".