2021122200 has 96 divisors (see below), whose sum is σ = 6398876160. Its totient is φ = 527491200.

The previous prime is 2021122199. The next prime is 2021122219. The reversal of 2021122200 is 22211202.

2021122200 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7636 + ... + 64035.

It is an arithmetic number, because the mean of its divisors is an integer number (66654960).

Almost surely, 2^2021122200 is an apocalyptic number.

2021122200 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 2021122200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3199438080).

2021122200 is an abundant number, since it is smaller than the sum of its proper divisors (4377753960).

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

2021122200 is a wasteful number, since it uses less digits than its factorization.

2021122200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71737 (or 71728 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2021122200 is about 44956.8926862166. The cubic root of 2021122200 is about 1264.3409107560.

Adding to 2021122200 its reverse (22211202), we get a palindrome (2043333402).

The spelling of 2021122200 in words is "two billion, twenty-one million, one hundred twenty-two thousand, two hundred".