22210212212 has 12 divisors (see below), whose sum is σ = 38869513956. Its totient is φ = 11104636800.

The previous prime is 22210212137. The next prime is 22210212217. The reversal of 22210212212 is 21221201222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3112077796 + 19098134416 = 55786^2 + 138196^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22210212217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2828 + ... + 210780.

It is an arithmetic number, because the mean of its divisors is an integer number (3239126163).

Almost surely, 2^22210212212 is an apocalyptic number.

It is an amenable number.

22210212212 is a deficient number, since it is larger than the sum of its proper divisors (16659301744).

22210212212 is a wasteful number, since it uses less digits than its factorization.

22210212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234658 (or 234656 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22210212212 its reverse (21221201222), we get a palindrome (43431413434).

The spelling of 22210212212 in words is "twenty-two billion, two hundred ten million, two hundred twelve thousand, two hundred twelve".