12355221316 has 6 divisors (see below), whose sum is σ = 21621637310. Its totient is φ = 6177610656.

The previous prime is 12355221313. The next prime is 12355221317. The reversal of 12355221316 is 61312255321.

12355221316 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7779240000 + 4575981316 = 88200^2 + 67646^2 .

It is not an unprimeable number, because it can be changed into a prime (12355221313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1544402661 + ... + 1544402668.

Almost surely, 2^12355221316 is an apocalyptic number.

It is an amenable number.

12355221316 is a deficient number, since it is larger than the sum of its proper divisors (9266415994).

12355221316 is a wasteful number, since it uses less digits than its factorization.

12355221316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3088805333 (or 3088805331 counting only the distinct ones).

The product of its digits is 10800, while the sum is 31.

Adding to 12355221316 its reverse (61312255321), we get a palindrome (73667476637).

The spelling of 12355221316 in words is "twelve billion, three hundred fifty-five million, two hundred twenty-one thousand, three hundred sixteen".