212222230 has 32 divisors (see below), whose sum is σ = 420795648. Its totient is φ = 76418400.

The previous prime is 212222189. The next prime is 212222291. The reversal of 212222230 is 32222212.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1965 + ... + 20695.

It is an arithmetic number, because the mean of its divisors is an integer number (13149864).

Almost surely, 2^212222230 is an apocalyptic number.

212222230 is a deficient number, since it is larger than the sum of its proper divisors (208573418).

212222230 is a wasteful number, since it uses less digits than its factorization.

212222230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18852.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 212222230 is about 14567.8491892249. The cubic root of 212222230 is about 596.4814717459.

Adding to 212222230 its reverse (32222212), we get a palindrome (244444442).

The spelling of 212222230 in words is "two hundred twelve million, two hundred twenty-two thousand, two hundred thirty".