123123223112 has 32 divisors (see below), whose sum is σ = 244461483000. Its totient is φ = 57934255104.

The previous prime is 123123223109. The next prime is 123123223127. The reversal of 123123223112 is 211322321321.

It can be written as a sum of positive squares in 4 ways, for example, as 97023528196 + 26099694916 = 311486^2 + 161554^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1417514 + ... + 1501862.

Almost surely, 2^123123223112 is an apocalyptic number.

It is an amenable number.

123123223112 is a deficient number, since it is larger than the sum of its proper divisors (121338259888).

123123223112 is a wasteful number, since it uses less digits than its factorization.

123123223112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95105 (or 95101 counting only the distinct ones).

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

Adding to 123123223112 its reverse (211322321321), we get a palindrome (334445544433).

The spelling of 123123223112 in words is "one hundred twenty-three billion, one hundred twenty-three million, two hundred twenty-three thousand, one hundred twelve".