1100112221 has 24 divisors (see below), whose sum is σ = 1254177792. Its totient is φ = 957830400.

The previous prime is 1100112197. The next prime is 1100112229. The reversal of 1100112221 is 1222110011.

It is not a de Polignac number, because 1100112221 - 2¹⁴ = 1100095837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100112229) by changing a digit.

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, 4564661 + ... + 4564901.

It is an arithmetic number, because the mean of its divisors is an integer number (52257408).

Almost surely, 2^1100112221 is an apocalyptic number.

It is an amenable number.

1100112221 is a deficient number, since it is larger than the sum of its proper divisors (154065571).

1100112221 is an equidigital number, since it uses as much as digits as its factorization.

1100112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1100112221 is about 33167.9396556373. The cubic root of 1100112221 is about 1032.3152183557.

Adding to 1100112221 its reverse (1222110011), we get a palindrome (2322222232).

The spelling of 1100112221 in words is "one billion, one hundred million, one hundred twelve thousand, two hundred twenty-one".