12240120123 has 48 divisors (see below), whose sum is σ = 22061894400. Its totient is φ = 6353000640.

The previous prime is 12240120107. The next prime is 12240120143. The reversal of 12240120123 is 32102104221.

It is a happy number.

12240120123 is a `hidden beast` number, since 122 + 401 + 20 + 123 = 666.

It is not a de Polignac number, because 12240120123 - 2⁴ = 12240120107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12240120096 and 12240120105.

It is not an unprimeable number, because it can be changed into a prime (12240120143) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 865473 + ... + 879501.

It is an arithmetic number, because the mean of its divisors is an integer number (459622800).

Almost surely, 2^12240120123 is an apocalyptic number.

12240120123 is a deficient number, since it is larger than the sum of its proper divisors (9821774277).

12240120123 is a wasteful number, since it uses less digits than its factorization.

12240120123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15312 (or 15309 counting only the distinct ones).

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

Adding to 12240120123 its reverse (32102104221), we get a palindrome (44342224344).

The spelling of 12240120123 in words is "twelve billion, two hundred forty million, one hundred twenty thousand, one hundred twenty-three".