11172205 has 16 divisors (see below), whose sum is σ = 14836608. Its totient is φ = 8008000.

The previous prime is 11172199. The next prime is 11172233. The reversal of 11172205 is 50227111.

It is a de Polignac number, because none of the positive numbers 2^k-11172205 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 2475 + ... + 5335.

It is an arithmetic number, because the mean of its divisors is an integer number (927288).

Almost surely, 2^11172205 is an apocalyptic number.

It is an amenable number.

11172205 is a deficient number, since it is larger than the sum of its proper divisors (3664403).

11172205 is a wasteful number, since it uses less digits than its factorization.

11172205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2948.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 11172205 is about 3342.4848541168. The cubic root of 11172205 is about 223.5525520080.

Adding to 11172205 its reverse (50227111), we get a palindrome (61399316).

The spelling of 11172205 in words is "eleven million, one hundred seventy-two thousand, two hundred five".