2221100000 has 288 divisors, whose sum is σ = 6614576640. Its totient is φ = 717120000.

The previous prime is 2221099999. The next prime is 2221100023. The reversal of 2221100000 is 11222.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 13299917 + ... + 13300083.

It is an arithmetic number, because the mean of its divisors is an integer number (22967280).

Almost surely, 2^2221100000 is an apocalyptic number.

2221100000 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 2221100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3307288320).

2221100000 is an abundant number, since it is smaller than the sum of its proper divisors (4393476640).

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

2221100000 is an equidigital number, since it uses as much as digits as its factorization.

2221100000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 200 counting only the distinct ones).

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

The square root of 2221100000 is about 47128.5476118244. The cubic root of 2221100000 is about 1304.7361758287.

Adding to 2221100000 its reverse (11222), we get a palindrome (2221111222).

The spelling of 2221100000 in words is "two billion, two hundred twenty-one million, one hundred thousand".