11866212 has 18 divisors (see below), whose sum is σ = 29995238. Its totient is φ = 3955392.

The previous prime is 11866201. The next prime is 11866213. The reversal of 11866212 is 21266811.

It can be written as a sum of positive squares in only one way, i.e., 8156736 + 3709476 = 2856^2 + 1926^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (11866213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 164773 + ... + 164844.

Almost surely, 2^11866212 is an apocalyptic number.

11866212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11866212 is an abundant number, since it is smaller than the sum of its proper divisors (18129026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11866212 is a wasteful number, since it uses less digits than its factorization.

11866212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329627 (or 329622 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 11866212 is about 3444.7368549717. The cubic root of 11866212 is about 228.0888388795.

The spelling of 11866212 in words is "eleven million, eight hundred sixty-six thousand, two hundred twelve".