2221100010 has 96 divisors (see below), whose sum is σ = 6006723840. Its totient is φ = 568923264.

The previous prime is 2221099999. The next prime is 2221100023. The reversal of 2221100010 is 100011222.

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

It is a junction number, because it is equal to n+sod(n) for n = 2221099965 and 2221100001.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 258849 + ... + 267291.

It is an arithmetic number, because the mean of its divisors is an integer number (62570040).

Almost surely, 2^2221100010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221100010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3003361920).

2221100010 is an abundant number, since it is smaller than the sum of its proper divisors (3785623830).

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

2221100010 is a wasteful number, since it uses less digits than its factorization.

2221100010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8572 (or 8569 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2221100010 is about 47128.5477179172. The cubic root of 2221100010 is about 1304.7361777868.

Adding to 2221100010 its reverse (100011222), we get a palindrome (2321111232).

The spelling of 2221100010 in words is "two billion, two hundred twenty-one million, one hundred thousand, ten".