12123040122 has 48 divisors (see below), whose sum is σ = 27255245472. Its totient is φ = 4038666480.

The previous prime is 12123040109. The next prime is 12123040129. The reversal of 12123040122 is 22104032121.

It is a happy number.

12123040122 is a `hidden beast` number, since 1 + 212 + 30 + 401 + 22 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 12123040095 and 12123040104.

It is not an unprimeable number, because it can be changed into a prime (12123040129) 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 23 ways as a sum of consecutive naturals, for example, 964297 + ... + 976787.

It is an arithmetic number, because the mean of its divisors is an integer number (567817614).

Almost surely, 2^12123040122 is an apocalyptic number.

12123040122 is an abundant number, since it is smaller than the sum of its proper divisors (15132205350).

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

12123040122 is a wasteful number, since it uses less digits than its factorization.

12123040122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14505 (or 14493 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12123040122 its reverse (22104032121), we get a palindrome (34227072243).

The spelling of 12123040122 in words is "twelve billion, one hundred twenty-three million, forty thousand, one hundred twenty-two".