2221011200 has 54 divisors (see below), whose sum is σ = 5497365594. Its totient is φ = 888401920.

The previous prime is 2221011187. The next prime is 2221011227. The reversal of 2221011200 is 21101222.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 87310336 + 2133700864 = 9344^2 + 46192^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 167117 + ... + 179916.

Almost surely, 2^2221011200 is an apocalyptic number.

2221011200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221011200 is an abundant number, since it is smaller than the sum of its proper divisors (3276354394).

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

2221011200 is an equidigital number, since it uses as much as digits as its factorization.

2221011200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347059 (or 347040 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2221011200 is about 47127.6054982640. The cubic root of 2221011200 is about 1304.7187877302.

Adding to 2221011200 its reverse (21101222), we get a palindrome (2242112422).

The spelling of 2221011200 in words is "two billion, two hundred twenty-one million, eleven thousand, two hundred".