12179695522 has 4 divisors (see below), whose sum is σ = 18269543286. Its totient is φ = 6089847760.

The previous prime is 12179695511. The next prime is 12179695531. The reversal of 12179695522 is 22559697121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22559697121 = 13 ⋅1735361317.

It can be written as a sum of positive squares in only one way, i.e., 8260810321 + 3918885201 = 90889^2 + 62601^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3044923879 + ... + 3044923882.

Almost surely, 2^12179695522 is an apocalyptic number.

12179695522 is a deficient number, since it is larger than the sum of its proper divisors (6089847764).

12179695522 is an equidigital number, since it uses as much as digits as its factorization.

12179695522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6089847763.

The product of its digits is 680400, while the sum is 49.

The spelling of 12179695522 in words is "twelve billion, one hundred seventy-nine million, six hundred ninety-five thousand, five hundred twenty-two".