1100221103 has 4 divisors (see below), whose sum is σ = 1105068120. Its totient is φ = 1095374088.

The previous prime is 1100221097. The next prime is 1100221127. The reversal of 1100221103 is 3011220011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1100221103 - 2²⁰ = 1099172527 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 (1100220103) 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 3 ways as a sum of consecutive naturals, for example, 2423168 + ... + 2423621.

It is an arithmetic number, because the mean of its divisors is an integer number (276267030).

Almost surely, 2^1100221103 is an apocalyptic number.

1100221103 is a deficient number, since it is larger than the sum of its proper divisors (4847017).

1100221103 is an equidigital number, since it uses as much as digits as its factorization.

1100221103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4847016.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1100221103 is about 33169.5809892136. The cubic root of 1100221103 is about 1032.3492745290.

Adding to 1100221103 its reverse (3011220011), we get a palindrome (4111441114).

The spelling of 1100221103 in words is "one billion, one hundred million, two hundred twenty-one thousand, one hundred three".