222122212 has 12 divisors (see below), whose sum is σ = 418615036. Its totient is φ = 102517920.

The previous prime is 222122209. The next prime is 222122231. The reversal of 222122212 is 212221222.

222122212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 77545636 + 144576576 = 8806^2 + 12024^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2135739 + ... + 2135842.

Almost surely, 2^222122212 is an apocalyptic number.

It is an amenable number.

222122212 is a deficient number, since it is larger than the sum of its proper divisors (196492824).

222122212 is a wasteful number, since it uses less digits than its factorization.

222122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4271598 (or 4271596 counting only the distinct ones).

The product of its digits is 128, while the sum is 16.

The square root of 222122212 is about 14903.7650276700. The cubic root of 222122212 is about 605.6159853256.

Adding to 222122212 its reverse (212221222), we get a palindrome (434343434).

It can be divided in two parts, 22 and 2122212, that multiplied together give a palindrome (46688664).

The spelling of 222122212 in words is "two hundred twenty-two million, one hundred twenty-two thousand, two hundred twelve".