12173534121 has 16 divisors (see below), whose sum is σ = 18561315200. Its totient is φ = 6952117248.

The previous prime is 12173534111. The next prime is 12173534143. The reversal of 12173534121 is 12143537121.

It is not a de Polignac number, because 12173534121 - 2¹⁴ = 12173517737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12173534101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138616 + ... + 208713.

It is an arithmetic number, because the mean of its divisors is an integer number (1160082200).

Almost surely, 2^12173534121 is an apocalyptic number.

It is an amenable number.

12173534121 is a deficient number, since it is larger than the sum of its proper divisors (6387781079).

12173534121 is a wasteful number, since it uses less digits than its factorization.

12173534121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349008.

The product of its digits is 5040, while the sum is 30.

The spelling of 12173534121 in words is "twelve billion, one hundred seventy-three million, five hundred thirty-four thousand, one hundred twenty-one".