11156212 has 12 divisors (see below), whose sum is σ = 19581156. Its totient is φ = 5561600.

The previous prime is 11156207. The next prime is 11156227. The reversal of 11156212 is 21265111.

It can be written as a sum of positive squares in 2 ways, for example, as 6120676 + 5035536 = 2474^2 + 2244^2 .

It is a super-2 number, since 2×11156212² = 248922132377888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11156212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2539 + ... + 5362.

It is an arithmetic number, because the mean of its divisors is an integer number (1631763).

Almost surely, 2^11156212 is an apocalyptic number.

It is an amenable number.

11156212 is a deficient number, since it is larger than the sum of its proper divisors (8424944).

11156212 is a wasteful number, since it uses less digits than its factorization.

11156212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8258 (or 8256 counting only the distinct ones).

The product of its digits is 120, while the sum is 19.

The square root of 11156212 is about 3340.0916155100. The cubic root of 11156212 is about 223.4458293177.

The spelling of 11156212 in words is "eleven million, one hundred fifty-six thousand, two hundred twelve".