123102231112 has 64 divisors (see below), whose sum is σ = 271105084800. Its totient is φ = 51305909760.

The previous prime is 123102231107. The next prime is 123102231151. The reversal of 123102231112 is 211132201321.

It is a self number, because there is not a number n which added to its sum of digits gives 123102231112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 439812 + ... + 663052.

It is an arithmetic number, because the mean of its divisors is an integer number (4236016950).

Almost surely, 2^123102231112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123102231112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135552542400).

123102231112 is an abundant number, since it is smaller than the sum of its proper divisors (148002853688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123102231112 is a wasteful number, since it uses less digits than its factorization.

123102231112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223526 (or 223522 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 123102231112 its reverse (211132201321), we get a palindrome (334234432433).

It can be divided in two parts, 12310 and 2231112, that added together give a palindrome (2243422).

The spelling of 123102231112 in words is "one hundred twenty-three billion, one hundred two million, two hundred thirty-one thousand, one hundred twelve".