212258 has 4 divisors (see below), whose sum is σ = 318390. Its totient is φ = 106128.

The previous prime is 212243. The next prime is 212281. The reversal of 212258 is 852212.

212258 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 182329 + 29929 = 427^2 + 173^2 .

It is an Ulam number.

It is a d-powerful number, because it can be written as 2⁴ + 1 + 2¹⁶ + 2¹⁷ + 5⁶ + 8 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53063 + ... + 53066.

2²¹²²⁵⁸ is an apocalyptic number.

212258 is a deficient number, since it is larger than the sum of its proper divisors (106132).

212258 is a wasteful number, since it uses less digits than its factorization.

212258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106131.

The product of its digits is 320, while the sum is 20.

The square root of 212258 is about 460.7146622368. The cubic root of 212258 is about 59.6514982127.

The spelling of 212258 in words is "two hundred twelve thousand, two hundred fifty-eight".