211140212 has 6 divisors (see below), whose sum is σ = 369495378. Its totient is φ = 105570104.

The previous prime is 211140199. The next prime is 211140227. The reversal of 211140212 is 212041112.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 204032656 + 7107556 = 14284^2 + 2666^2 .

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, 26392523 + ... + 26392530.

It is an arithmetic number, because the mean of its divisors is an integer number (61582563).

Almost surely, 2^211140212 is an apocalyptic number.

It is an amenable number.

211140212 is a deficient number, since it is larger than the sum of its proper divisors (158355166).

211140212 is a wasteful number, since it uses less digits than its factorization.

211140212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52785057 (or 52785055 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 211140212 is about 14530.6645408942. The cubic root of 211140212 is about 595.4660209876.

Adding to 211140212 its reverse (212041112), we get a palindrome (423181324).

The spelling of 211140212 in words is "two hundred eleven million, one hundred forty thousand, two hundred twelve".