20112021300 has 144 divisors (see below), whose sum is σ = 67758913152. Its totient is φ = 4510272000.

The previous prime is 20112021283. The next prime is 20112021301. The reversal of 20112021300 is 312021102.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112021301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20950 + ... + 201650.

It is an arithmetic number, because the mean of its divisors is an integer number (470548008).

Almost surely, 2^20112021300 is an apocalyptic number.

20112021300 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 20112021300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33879456576).

20112021300 is an abundant number, since it is smaller than the sum of its proper divisors (47646891852).

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

20112021300 is a wasteful number, since it uses less digits than its factorization.

20112021300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180778 (or 180771 counting only the distinct ones).

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

Adding to 20112021300 its reverse (312021102), we get a palindrome (20424042402).

The spelling of 20112021300 in words is "twenty billion, one hundred twelve million, twenty-one thousand, three hundred".