123211122212 has 24 divisors (see below), whose sum is σ = 218508259200. Its totient is φ = 60784922016.

The previous prime is 123211122211. The next prime is 123211122239. The reversal of 123211122212 is 212221112321.

It is not an unprimeable number, because it can be changed into a prime (123211122211) 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 7 ways as a sum of consecutive naturals, for example, 486998 + ... + 695405.

It is an arithmetic number, because the mean of its divisors is an integer number (9104510800).

Almost surely, 2^123211122212 is an apocalyptic number.

It is an amenable number.

123211122212 is a deficient number, since it is larger than the sum of its proper divisors (95297136988).

123211122212 is a wasteful number, since it uses less digits than its factorization.

123211122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182755 (or 1182753 counting only the distinct ones).

The product of its digits is 192, while the sum is 20.

Adding to 123211122212 its reverse (212221112321), we get a palindrome (335432234533).

The spelling of 123211122212 in words is "one hundred twenty-three billion, two hundred eleven million, one hundred twenty-two thousand, two hundred twelve".