123211232212 has 6 divisors (see below), whose sum is σ = 215619656378. Its totient is φ = 61605616104.

The previous prime is 123211232173. The next prime is 123211232269. The reversal of 123211232212 is 212232112321.

It can be written as a sum of positive squares in only one way, i.e., 90237756816 + 32973475396 = 300396^2 + 181586^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15401404023 + ... + 15401404030.

Almost surely, 2^123211232212 is an apocalyptic number.

It is an amenable number.

123211232212 is a deficient number, since it is larger than the sum of its proper divisors (92408424166).

123211232212 is a wasteful number, since it uses less digits than its factorization.

123211232212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30802808057 (or 30802808055 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

Adding to 123211232212 its reverse (212232112321), we get a palindrome (335443344533).

The spelling of 123211232212 in words is "one hundred twenty-three billion, two hundred eleven million, two hundred thirty-two thousand, two hundred twelve".