212212244 has 24 divisors (see below), whose sum is σ = 377213760. Its totient is φ = 104449856.

The previous prime is 212212243. The next prime is 212212261. The reversal of 212212244 is 442212212.

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212212243) 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 in 7 ways as a sum of consecutive naturals, for example, 69992 + ... + 72960.

It is an arithmetic number, because the mean of its divisors is an integer number (15717240).

Almost surely, 2^212212244 is an apocalyptic number.

It is an amenable number.

212212244 is a deficient number, since it is larger than the sum of its proper divisors (165001516).

212212244 is a wasteful number, since it uses less digits than its factorization.

212212244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3247 (or 3245 counting only the distinct ones).

The product of its digits is 512, while the sum is 20.

The square root of 212212244 is about 14567.5064441379. The cubic root of 212212244 is about 596.4721158969.

Adding to 212212244 its reverse (442212212), we get a palindrome (654424456).

The spelling of 212212244 in words is "two hundred twelve million, two hundred twelve thousand, two hundred forty-four".