12173037121 has 12 divisors (see below), whose sum is σ = 14164308480. Its totient is φ = 10431204840.

The previous prime is 12173037091. The next prime is 12173037131.

12173037121 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12173037121 - 2⁵ = 12173037089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12173037121.

It is not an unprimeable number, because it can be changed into a prime (12173037131) 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, 160336 + ... + 223726.

It is an arithmetic number, because the mean of its divisors is an integer number (1180359040).

Almost surely, 2^12173037121 is an apocalyptic number.

It is an amenable number.

12173037121 is a deficient number, since it is larger than the sum of its proper divisors (1991271359).

12173037121 is an equidigital number, since it uses as much as digits as its factorization.

12173037121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67324 (or 67317 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 28.

It can be divided in two parts, 121730 and 37121, that added together give a palindrome (158851).

The spelling of 12173037121 in words is "twelve billion, one hundred seventy-three million, thirty-seven thousand, one hundred twenty-one".