212330 has 16 divisors (see below), whose sum is σ = 405000. Its totient is φ = 79872.

The previous prime is 212297. The next prime is 212353. The reversal of 212330 is 33212.

It can be written as a sum of positive squares in 4 ways, for example, as 185761 + 26569 = 431^2 + 163^2 .

It is a Curzon number.

It is a plaindrome in base 11.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 455 + ... + 794.

2²¹²³³⁰ is an apocalyptic number.

212330 is a deficient number, since it is larger than the sum of its proper divisors (192670).

212330 is a wasteful number, since it uses less digits than its factorization.

212330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 212330 is about 460.7927950826. The cubic root of 212330 is about 59.6582422418.

Adding to 212330 its reverse (33212), we get a palindrome (245542).

The spelling of 212330 in words is "two hundred twelve thousand, three hundred thirty".