1123212212 has 12 divisors (see below), whose sum is σ = 2029028736. Its totient is φ = 543489720.

The previous prime is 1123212169. The next prime is 1123212217. The reversal of 1123212212 is 2122123211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123212217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4528958 + ... + 4529205.

It is an arithmetic number, because the mean of its divisors is an integer number (169085728).

Almost surely, 2^1123212212 is an apocalyptic number.

It is an amenable number.

1123212212 is a deficient number, since it is larger than the sum of its proper divisors (905816524).

1123212212 is a wasteful number, since it uses less digits than its factorization.

1123212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9058198 (or 9058196 counting only the distinct ones).

The product of its digits is 96, while the sum is 17.

The square root of 1123212212 is about 33514.3582961094. The cubic root of 1123212212 is about 1039.4906936718.

Adding to 1123212212 its reverse (2122123211), we get a palindrome (3245335423).

The spelling of 1123212212 in words is "one billion, one hundred twenty-three million, two hundred twelve thousand, two hundred twelve".