20321030112 has 24 divisors (see below), whose sum is σ = 53342704296. Its totient is φ = 6773676672.

The previous prime is 20321030057. The next prime is 20321030137. The reversal of 20321030112 is 21103012302.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 20321030091 and 20321030100.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 105838603 + ... + 105838794.

It is an arithmetic number, because the mean of its divisors is an integer number (2222612679).

Almost surely, 2^20321030112 is an apocalyptic number.

It is an amenable number.

20321030112 is an abundant number, since it is smaller than the sum of its proper divisors (33021674184).

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

20321030112 is a wasteful number, since it uses less digits than its factorization.

20321030112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211677410 (or 211677402 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20321030112 its reverse (21103012302), we get a palindrome (41424042414).

The spelling of 20321030112 in words is "twenty billion, three hundred twenty-one million, thirty thousand, one hundred twelve".