1100213305 has 4 divisors (see below), whose sum is σ = 1320255972. Its totient is φ = 880170640.

The previous prime is 1100213249. The next prime is 1100213321. The reversal of 1100213305 is 5033120011.

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

It can be written as a sum of positive squares in 2 ways, for example, as 862714384 + 237498921 = 29372^2 + 15411^2 .

It is not a de Polignac number, because 1100213305 - 2⁹ = 1100212793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110021326 + ... + 110021335.

It is an arithmetic number, because the mean of its divisors is an integer number (330063993).

Almost surely, 2^1100213305 is an apocalyptic number.

It is an amenable number.

1100213305 is a deficient number, since it is larger than the sum of its proper divisors (220042667).

1100213305 is an equidigital number, since it uses as much as digits as its factorization.

1100213305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220042666.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 1100213305 is about 33169.4634415451. The cubic root of 1100213305 is about 1032.3468355409.

Adding to 1100213305 its reverse (5033120011), we get a palindrome (6133333316).

The spelling of 1100213305 in words is "one billion, one hundred million, two hundred thirteen thousand, three hundred five".