20112443200 has 84 divisors (see below), whose sum is σ = 49560845760. Its totient is φ = 8033328640.

The previous prime is 20112443171. The next prime is 20112443209. The reversal of 20112443200 is 234421102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112443209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1141659 + ... + 1159141.

Almost surely, 2^20112443200 is an apocalyptic number.

20112443200 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 20112443200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24780422880).

20112443200 is an abundant number, since it is smaller than the sum of its proper divisors (29448402560).

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

20112443200 is a wasteful number, since it uses less digits than its factorization.

20112443200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18224 (or 18209 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20112443200 its reverse (234421102), we get a palindrome (20346864302).

The spelling of 20112443200 in words is "twenty billion, one hundred twelve million, four hundred forty-three thousand, two hundred".