12002134123 has 12 divisors (see below), whose sum is σ = 13741179088. Its totient is φ = 10269234720.

The previous prime is 12002134121. The next prime is 12002134129. The reversal of 12002134123 is 32143120021.

It is a happy number.

It is not a de Polignac number, because 12002134123 - 2¹ = 12002134121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12002134123.

It is not an unprimeable number, because it can be changed into a prime (12002134121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2982853 + ... + 2986873.

Almost surely, 2^12002134123 is an apocalyptic number.

12002134123 is a deficient number, since it is larger than the sum of its proper divisors (1739044965).

12002134123 is an frugal number, since it uses more digits than its factorization.

12002134123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5334 (or 4681 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12002134123 its reverse (32143120021), we get a palindrome (44145254144).

The spelling of 12002134123 in words is "twelve billion, two million, one hundred thirty-four thousand, one hundred twenty-three".