212227285 has 8 divisors (see below), whose sum is σ = 256505760. Its totient is φ = 168559824.

The previous prime is 212227243. The next prime is 212227289. The reversal of 212227285 is 582722212.

212227285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 212227285 - 2⁷ = 212227157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212227289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151987 + ... + 153376.

It is an arithmetic number, because the mean of its divisors is an integer number (32063220).

Almost surely, 2^212227285 is an apocalyptic number.

It is an amenable number.

212227285 is a deficient number, since it is larger than the sum of its proper divisors (44278475).

212227285 is a wasteful number, since it uses less digits than its factorization.

212227285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305507.

The product of its digits is 8960, while the sum is 31.

The square root of 212227285 is about 14568.0226866929. The cubic root of 212227285 is about 596.4862076461.

Adding to 212227285 its reverse (582722212), we get a palindrome (794949497).

The spelling of 212227285 in words is "two hundred twelve million, two hundred twenty-seven thousand, two hundred eighty-five".