211333212 has 36 divisors (see below), whose sum is σ = 553991256. Its totient is φ = 70444080.

The previous prime is 211333211. The next prime is 211333277. The reversal of 211333212 is 212333112.

211333212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211333211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107739 + ... + 109682.

It is an arithmetic number, because the mean of its divisors is an integer number (15388646).

Almost surely, 2^211333212 is an apocalyptic number.

It is an amenable number.

211333212 is an abundant number, since it is smaller than the sum of its proper divisors (342658044).

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

211333212 is a wasteful number, since it uses less digits than its factorization.

211333212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217440 (or 217426 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 211333212 is about 14537.3041517332. The cubic root of 211333212 is about 595.6474011578.

Adding to 211333212 its reverse (212333112), we get a palindrome (423666324).

The spelling of 211333212 in words is "two hundred eleven million, three hundred thirty-three thousand, two hundred twelve".