2013221200 has 30 divisors (see below), whose sum is σ = 4836764894. Its totient is φ = 805288320.

The previous prime is 2013221167. The next prime is 2013221219. The reversal of 2013221200 is 21223102.

It can be written as a sum of positive squares in 3 ways, for example, as 225961024 + 1787260176 = 15032^2 + 42276^2 .

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 2516127 + ... + 2516926.

Almost surely, 2^2013221200 is an apocalyptic number.

2013221200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2013221200 is an abundant number, since it is smaller than the sum of its proper divisors (2823543694).

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

2013221200 is a wasteful number, since it uses less digits than its factorization.

2013221200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5033071 (or 5033060 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2013221200 is about 44868.9335732420. The cubic root of 2013221200 is about 1262.6912326733.

Adding to 2013221200 its reverse (21223102), we get a palindrome (2034444302).

The spelling of 2013221200 in words is "two billion, thirteen million, two hundred twenty-one thousand, two hundred".