12165452122 has 4 divisors (see below), whose sum is σ = 18248178186. Its totient is φ = 6082726060.

The previous prime is 12165452053. The next prime is 12165452203. The reversal of 12165452122 is 22125456121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22125456121 = 31 ⋅713724391.

It can be written as a sum of positive squares in only one way, i.e., 11054629881 + 1110822241 = 105141^2 + 33329^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3041363029 + ... + 3041363032.

Almost surely, 2^12165452122 is an apocalyptic number.

12165452122 is a deficient number, since it is larger than the sum of its proper divisors (6082726064).

12165452122 is an equidigital number, since it uses as much as digits as its factorization.

12165452122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6082726063.

The product of its digits is 9600, while the sum is 31.

The spelling of 12165452122 in words is "twelve billion, one hundred sixty-five million, four hundred fifty-two thousand, one hundred twenty-two".