11212105 has 8 divisors (see below), whose sum is σ = 13675464. Its totient is φ = 8822400.

The previous prime is 11212081. The next prime is 11212127. The reversal of 11212105 is 50121211.

It can be written as a sum of positive squares in 4 ways, for example, as 1245456 + 9966649 = 1116^2 + 3157^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11212105 - 2¹⁷ = 11081033 is a prime.

It is a super-2 number, since 2×11212105² = 251422597062050, which 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18076 + ... + 18685.

It is an arithmetic number, because the mean of its divisors is an integer number (1709433).

Almost surely, 2^11212105 is an apocalyptic number.

It is an amenable number.

11212105 is a deficient number, since it is larger than the sum of its proper divisors (2463359).

11212105 is an equidigital number, since it uses as much as digits as its factorization.

11212105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36827.

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 11212105 is about 3348.4481480232. The cubic root of 11212105 is about 223.8183649277.

Adding to 11212105 its reverse (50121211), we get a palindrome (61333316).

The spelling of 11212105 in words is "eleven million, two hundred twelve thousand, one hundred five".