2200021200 has 360 divisors, whose sum is σ = 8510731320. Its totient is φ = 522547200.

The previous prime is 2200021193. The next prime is 2200021211. The reversal of 2200021200 is 21200022.

It can be written as a sum of positive squares in 12 ways, for example, as 652700304 + 1547320896 = 25548^2 + 39336^2 .

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1356390 + ... + 1358010.

Almost surely, 2^2200021200 is an apocalyptic number.

2200021200 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 2200021200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4255365660).

2200021200 is an abundant number, since it is smaller than the sum of its proper divisors (6310710120).

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

2200021200 is a wasteful number, since it uses less digits than its factorization.

2200021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687 (or 1673 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 2200021200 is about 46904.3835904492. The cubic root of 2200021200 is about 1300.5956244953.

Adding to 2200021200 its reverse (21200022), we get a palindrome (2221221222).

The spelling of 2200021200 in words is "two billion, two hundred million, twenty-one thousand, two hundred".