2021220300 has 108 divisors (see below), whose sum is σ = 6428152808. Its totient is φ = 489984000.

The previous prime is 2021220283. The next prime is 2021220301. The reversal of 2021220300 is 30221202.

It is a super-2 number, since 2×2021220300² = 8170663002264180000, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (2021220301) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 8460 + ... + 64140.

Almost surely, 2^2021220300 is an apocalyptic number.

2021220300 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 2021220300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3214076404).

2021220300 is an abundant number, since it is smaller than the sum of its proper divisors (4406932508).

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

2021220300 is a wasteful number, since it uses less digits than its factorization.

2021220300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55720 (or 55702 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 2021220300 is about 44957.9837181340. The cubic root of 2021220300 is about 1264.3613663617.

Adding to 2021220300 its reverse (30221202), we get a palindrome (2051441502).

The spelling of 2021220300 in words is "two billion, twenty-one million, two hundred twenty thousand, three hundred".