20032112321 has 12 divisors (see below), whose sum is σ = 21894322032. Its totient is φ = 18318349296.

The previous prime is 20032112273. The next prime is 20032112339. The reversal of 20032112321 is 12321123002.

It is a de Polignac number, because none of the positive numbers 2^k-20032112321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20032112321.

It is not an unprimeable number, because it can be changed into a prime (20032112341) 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 11 ways as a sum of consecutive naturals, for example, 535811 + ... + 571976.

It is an arithmetic number, because the mean of its divisors is an integer number (1824526836).

Almost surely, 2^20032112321 is an apocalyptic number.

It is an amenable number.

20032112321 is a deficient number, since it is larger than the sum of its proper divisors (1862209711).

20032112321 is a wasteful number, since it uses less digits than its factorization.

20032112321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107920 (or 1107907 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20032112321 its reverse (12321123002), we get a palindrome (32353235323).

The spelling of 20032112321 in words is "twenty billion, thirty-two million, one hundred twelve thousand, three hundred twenty-one".