212188 has 6 divisors (see below), whose sum is σ = 371336. Its totient is φ = 106092.

The previous prime is 212183. The next prime is 212203. The reversal of 212188 is 881212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212183) by changing a digit.

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 as a sum of consecutive naturals, namely, 26520 + ... + 26527.

2²¹²¹⁸⁸ is an apocalyptic number.

It is an amenable number.

212188 is a deficient number, since it is larger than the sum of its proper divisors (159148).

212188 is a wasteful number, since it uses less digits than its factorization.

212188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53051 (or 53049 counting only the distinct ones).

The product of its digits is 256, while the sum is 22.

The square root of 212188 is about 460.6386870422. The cubic root of 212188 is about 59.6449400556.

It can be divided in two parts, 21218 and 8, that multiplied together give a square (169744 = 412²).

The spelling of 212188 in words is "two hundred twelve thousand, one hundred eighty-eight".