212020 has 12 divisors (see below), whose sum is σ = 445284. Its totient is φ = 84800.

The previous prime is 211997. The next prime is 212029. The reversal of 212020 is 20212.

It is a happy number.

212020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 132496 + 79524 = 364^2 + 282^2 .

It is a junction number, because it is equal to n+sod(n) for n = 211994 and 212012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212029) by changing a digit.

212020 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 in 3 ways as a sum of consecutive naturals, for example, 5281 + ... + 5320.

It is an arithmetic number, because the mean of its divisors is an integer number (37107).

2²¹²⁰²⁰ is an apocalyptic number.

212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212020 is an abundant number, since it is smaller than the sum of its proper divisors (233264).

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

212020 is a wasteful number, since it uses less digits than its factorization.

212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10610 (or 10608 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 212020 is about 460.4562954288. The cubic root of 212020 is about 59.6291945914.

Adding to 212020 its reverse (20212), we get a palindrome (232232).

The spelling of 212020 in words is "two hundred twelve thousand, twenty", and thus it is an iban number.