212011 has 4 divisors (see below), whose sum is σ = 217224. Its totient is φ = 206800.

The previous prime is 211997. The next prime is 212029. The reversal of 212011 is 110212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212011 - 2⁵ = 211979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211985 and 212003.

It is not an unprimeable number, because it can be changed into a prime (212081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2545 + ... + 2626.

It is an arithmetic number, because the mean of its divisors is an integer number (54306).

2²¹²⁰¹¹ is an apocalyptic number.

212011 is a deficient number, since it is larger than the sum of its proper divisors (5213).

212011 is an equidigital number, since it uses as much as digits as its factorization.

212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5212.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 212011 is about 460.4465224106. The cubic root of 212011 is about 59.6283508497.

Adding to 212011 its reverse (110212), we get a palindrome (322223).

The spelling of 212011 in words is "two hundred twelve thousand, eleven", and thus it is an iban number.