227812212 has 36 divisors (see below), whose sum is σ = 576349956. Its totient is φ = 75872640.

The previous prime is 227812201. The next prime is 227812213. The reversal of 227812212 is 212218722.

It can be written as a sum of positive squares in 2 ways, for example, as 175191696 + 52620516 = 13236^2 + 7254^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×227812212³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227812213) 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 11 ways as a sum of consecutive naturals, for example, 60118 + ... + 63794.

It is an arithmetic number, because the mean of its divisors is an integer number (16009721).

Almost surely, 2^227812212 is an apocalyptic number.

It is an amenable number.

227812212 is an abundant number, since it is smaller than the sum of its proper divisors (348537744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

227812212 is a wasteful number, since it uses less digits than its factorization.

227812212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5408 (or 5403 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 227812212 is about 15093.4493075639. The cubic root of 227812212 is about 610.7437063667.

The spelling of 227812212 in words is "two hundred twenty-seven million, eight hundred twelve thousand, two hundred twelve".