2202221100 has 72 divisors (see below), whose sum is σ = 6394521280. Its totient is φ = 585161280.

The previous prime is 2202221041. The next prime is 2202221141. The reversal of 2202221100 is 11222022.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71931 + ... + 97869.

Almost surely, 2^2202221100 is an apocalyptic number.

2202221100 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 2202221100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3197260640).

2202221100 is an abundant number, since it is smaller than the sum of its proper divisors (4192300180).

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

2202221100 is a wasteful number, since it uses less digits than its factorization.

2202221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26239 (or 26232 counting only the distinct ones).

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

The square root of 2202221100 is about 46927.8286307815. The cubic root of 2202221100 is about 1301.0289880723.

Adding to 2202221100 its reverse (11222022), we get a palindrome (2213443122).

The spelling of 2202221100 in words is "two billion, two hundred two million, two hundred twenty-one thousand, one hundred".