211612 has 6 divisors (see below), whose sum is σ = 370328. Its totient is φ = 105804.

The previous prime is 211597. The next prime is 211619. The reversal of 211612 is 216112.

It is a junction number, because it is equal to n+sod(n) for n = 211592 and 211601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211619) by changing a digit.

211612 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26448 + ... + 26455.

2²¹¹⁶¹² is an apocalyptic number.

It is an amenable number.

211612 is a deficient number, since it is larger than the sum of its proper divisors (158716).

211612 is a wasteful number, since it uses less digits than its factorization.

211612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52907 (or 52905 counting only the distinct ones).

The product of its digits is 24, while the sum is 13.

The square root of 211612 is about 460.0130432933. The cubic root of 211612 is about 59.5909209479.

Adding to 211612 its reverse (216112), we get a palindrome (427724).

The spelling of 211612 in words is "two hundred eleven thousand, six hundred twelve".