12165122 has 4 divisors (see below), whose sum is σ = 18247686. Its totient is φ = 6082560.

The previous prime is 12165107. The next prime is 12165133. The reversal of 12165122 is 22156121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7187761 + 4977361 = 2681^2 + 2231^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12165094 and 12165103.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3041279 + ... + 3041282.

Almost surely, 2^12165122 is an apocalyptic number.

12165122 is a deficient number, since it is larger than the sum of its proper divisors (6082564).

12165122 is an equidigital number, since it uses as much as digits as its factorization.

12165122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6082563.

The product of its digits is 240, while the sum is 20.

The square root of 12165122 is about 3487.8534946296. The cubic root of 12165122 is about 229.9881657427.

Subtracting 12165122 from its reverse (22156121), we obtain a palindrome (9990999).

The spelling of 12165122 in words is "twelve million, one hundred sixty-five thousand, one hundred twenty-two".