212061 has 4 divisors (see below), whose sum is σ = 282752. Its totient is φ = 141372.

The previous prime is 212057. The next prime is 212081. The reversal of 212061 is 160212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 212061 - 2² = 212057 is a prime.

It is a D-number.

It is the 461-st Hogben number.

It is a Duffinian number.

It is a congruent number.

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

It is a nontrivial repunit in base 460.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35341 + ... + 35346.

It is an arithmetic number, because the mean of its divisors is an integer number (70688).

2²¹²⁰⁶¹ is an apocalyptic number.

It is an amenable number.

212061 is a deficient number, since it is larger than the sum of its proper divisors (70691).

212061 is an equidigital number, since it uses as much as digits as its factorization.

212061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70690.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 212061 is about 460.5008143315. The cubic root of 212061 is about 59.6330380015.

Adding to 212061 its reverse (160212), we get a palindrome (372273).

The spelling of 212061 in words is "two hundred twelve thousand, sixty-one".