212225606 has 8 divisors (see below), whose sum is σ = 318498480. Its totient is φ = 106059448.

The previous prime is 212225593. The next prime is 212225609. The reversal of 212225606 is 606522212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212225609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21506 + ... + 29781.

It is an arithmetic number, because the mean of its divisors is an integer number (39812310).

Almost surely, 2^212225606 is an apocalyptic number.

212225606 is a deficient number, since it is larger than the sum of its proper divisors (106272874).

212225606 is a wasteful number, since it uses less digits than its factorization.

212225606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53358.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 212225606 is about 14567.9650603645. The cubic root of 212225606 is about 596.4846346423.

Adding to 212225606 its reverse (606522212), we get a palindrome (818747818).

The spelling of 212225606 in words is "two hundred twelve million, two hundred twenty-five thousand, six hundred six".