11820212 has 6 divisors (see below), whose sum is σ = 20685378. Its totient is φ = 5910104.

The previous prime is 11820209. The next prime is 11820239. The reversal of 11820212 is 21202811.

It is a happy number.

11820212 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., 11464996 + 355216 = 3386^2 + 596^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1477523 + ... + 1477530.

It is an arithmetic number, because the mean of its divisors is an integer number (3447563).

Almost surely, 2^11820212 is an apocalyptic number.

It is an amenable number.

11820212 is a deficient number, since it is larger than the sum of its proper divisors (8865166).

11820212 is a wasteful number, since it uses less digits than its factorization.

11820212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2955057 (or 2955055 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 11820212 is about 3438.0535190715. The cubic root of 11820212 is about 227.7937243821.

The spelling of 11820212 in words is "eleven million, eight hundred twenty thousand, two hundred twelve".