11205445105 has 4 divisors (see below), whose sum is σ = 13446534132. Its totient is φ = 8964356080.

The previous prime is 11205445091. The next prime is 11205445117. The reversal of 11205445105 is 50154450211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50154450211 = 13829 ⋅3626759.

It can be written as a sum of positive squares in 2 ways, for example, as 7281550224 + 3923894881 = 85332^2 + 62641^2 .

It is not a de Polignac number, because 11205445105 - 2³¹ = 9057961457 is a prime.

It is a super-2 number, since 2×11205445105² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1120544506 + ... + 1120544515.

It is an arithmetic number, because the mean of its divisors is an integer number (3361633533).

Almost surely, 2^11205445105 is an apocalyptic number.

It is an amenable number.

11205445105 is a deficient number, since it is larger than the sum of its proper divisors (2241089027).

11205445105 is an equidigital number, since it uses as much as digits as its factorization.

11205445105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2241089026.

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 11205445105 its reverse (50154450211), we get a palindrome (61359895316).

The spelling of 11205445105 in words is "eleven billion, two hundred five million, four hundred forty-five thousand, one hundred five".