2211172 has 6 divisors (see below), whose sum is σ = 3869558. Its totient is φ = 1105584.

The previous prime is 2211161. The next prime is 2211179. The reversal of 2211172 is 2711122.

2211172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2005056 + 206116 = 1416^2 + 454^2 .

It is a super-2 number, since 2×2211172² = 9778563227168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2211179) by changing a digit.

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 as a sum of consecutive naturals, namely, 276393 + ... + 276400.

2^2211172 is an apocalyptic number.

It is an amenable number.

2211172 is a deficient number, since it is larger than the sum of its proper divisors (1658386).

2211172 is a wasteful number, since it uses less digits than its factorization.

2211172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552797 (or 552795 counting only the distinct ones).

The product of its digits is 56, while the sum is 16.

The square root of 2211172 is about 1487.0010087421. The cubic root of 2211172 is about 130.2789277324.

Adding to 2211172 its reverse (2711122), we get a palindrome (4922294).

The spelling of 2211172 in words is "two million, two hundred eleven thousand, one hundred seventy-two".