20001112320 has 288 divisors, whose sum is σ = 74011375872. Its totient is φ = 4508614656.

The previous prime is 20001112319. The next prime is 20001112349. The reversal of 20001112320 is 2321110002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20001112296 and 20001112305.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1957144 + ... + 1967336.

It is an arithmetic number, because the mean of its divisors is an integer number (256983944).

Almost surely, 2^20001112320 is an apocalyptic number.

20001112320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20001112320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37005687936).

20001112320 is an abundant number, since it is smaller than the sum of its proper divisors (54010263552).

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

20001112320 is a wasteful number, since it uses less digits than its factorization.

20001112320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10297 (or 10283 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20001112320 its reverse (2321110002), we get a palindrome (22322222322).

The spelling of 20001112320 in words is "twenty billion, one million, one hundred twelve thousand, three hundred twenty".