11229805 has 4 divisors (see below), whose sum is σ = 13475772. Its totient is φ = 8983840.

The previous prime is 11229793. The next prime is 11229847. The reversal of 11229805 is 50892211.

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 6538249 + 4691556 = 2557^2 + 2166^2 .

It is not a de Polignac number, because 11229805 - 2¹⁵ = 11197037 is a prime.

It is a super-2 number, since 2×11229805² = 252217040676050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent 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, 1122976 + ... + 1122985.

It is an arithmetic number, because the mean of its divisors is an integer number (3368943).

Almost surely, 2^11229805 is an apocalyptic number.

It is an amenable number.

11229805 is a deficient number, since it is larger than the sum of its proper divisors (2245967).

11229805 is an equidigital number, since it uses as much as digits as its factorization.

11229805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245966.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 11229805 is about 3351.0901211397. The cubic root of 11229805 is about 223.9360800292.

The spelling of 11229805 in words is "eleven million, two hundred twenty-nine thousand, eight hundred five".