20124322112 has 56 divisors (see below), whose sum is σ = 42076725600. Its totient is φ = 9523339776.

The previous prime is 20124322109. The next prime is 20124322159. The reversal of 20124322112 is 21122342102.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1341083 + ... + 1356005.

It is an arithmetic number, because the mean of its divisors is an integer number (751370100).

Almost surely, 2^20124322112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20124322112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21038362800).

20124322112 is an abundant number, since it is smaller than the sum of its proper divisors (21952403488).

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

20124322112 is a wasteful number, since it uses less digits than its factorization.

20124322112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16063 (or 16053 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20124322112 its reverse (21122342102), we get a palindrome (41246664214).

The spelling of 20124322112 in words is "twenty billion, one hundred twenty-four million, three hundred twenty-two thousand, one hundred twelve".