123223211312 has 20 divisors (see below), whose sum is σ = 239735622456. Its totient is φ = 61355953920.

The previous prime is 123223211299. The next prime is 123223211329. The reversal of 123223211312 is 213112322321.

123223211312 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×123223211312² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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, 15974258 + ... + 15981969.

Almost surely, 2^123223211312 is an apocalyptic number.

It is an amenable number.

123223211312 is a deficient number, since it is larger than the sum of its proper divisors (116512411144).

123223211312 is a wasteful number, since it uses less digits than its factorization.

123223211312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31956476 (or 31956470 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

Adding to 123223211312 its reverse (213112322321), we get a palindrome (336335533633).

The spelling of 123223211312 in words is "one hundred twenty-three billion, two hundred twenty-three million, two hundred eleven thousand, three hundred twelve".