123102302112 has 72 divisors (see below), whose sum is σ = 350190902880. Its totient is φ = 41020183680.

The previous prime is 123102302077. The next prime is 123102302137. The reversal of 123102302112 is 211203201321.

123102302112 is a `hidden beast` number, since 12 + 310 + 230 + 2 + 112 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 796189 + ... + 938147.

It is an arithmetic number, because the mean of its divisors is an integer number (4863762540).

Almost surely, 2^123102302112 is an apocalyptic number.

123102302112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123102302112 is an abundant number, since it is smaller than the sum of its proper divisors (227088600768).

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

123102302112 is a wasteful number, since it uses less digits than its factorization.

123102302112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144986 (or 144975 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 123102302112 its reverse (211203201321), we get a palindrome (334305503433).

The spelling of 123102302112 in words is "one hundred twenty-three billion, one hundred two million, three hundred two thousand, one hundred twelve".