12129496973 has 4 divisors (see below), whose sum is σ = 13232178528. Its totient is φ = 11026815420.

The previous prime is 12129496969. The next prime is 12129496979. The reversal of 12129496973 is 37969492121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12129496973 - 2² = 12129496969 is a prime.

It is a super-3 number, since 3×12129496973³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12129496979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551340761 + ... + 551340782.

It is an arithmetic number, because the mean of its divisors is an integer number (3308044632).

Almost surely, 2^12129496973 is an apocalyptic number.

It is an amenable number.

12129496973 is a deficient number, since it is larger than the sum of its proper divisors (1102681555).

12129496973 is a wasteful number, since it uses less digits than its factorization.

12129496973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102681554.

The product of its digits is 1469664, while the sum is 53.

The spelling of 12129496973 in words is "twelve billion, one hundred twenty-nine million, four hundred ninety-six thousand, nine hundred seventy-three".