13442221306 has 4 divisors (see below), whose sum is σ = 20163331962. Its totient is φ = 6721110652.

The previous prime is 13442221277. The next prime is 13442221313. The reversal of 13442221306 is 60312224431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60312224431 = 103 ⋅585555577.

It can be written as a sum of positive squares in only one way, i.e., 13216951225 + 225270081 = 114965^2 + 15009^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3360555325 + ... + 3360555328.

Almost surely, 2^13442221306 is an apocalyptic number.

13442221306 is a deficient number, since it is larger than the sum of its proper divisors (6721110656).

13442221306 is an equidigital number, since it uses as much as digits as its factorization.

13442221306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6721110655.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 13442221306 its reverse (60312224431), we get a palindrome (73754445737).

The spelling of 13442221306 in words is "thirteen billion, four hundred forty-two million, two hundred twenty-one thousand, three hundred six".