20443220122 has 16 divisors (see below), whose sum is σ = 33042791880. Its totient is φ = 9429867072.

The previous prime is 20443220033. The next prime is 20443220129. The reversal of 20443220122 is 22102234402.

It can be written as a sum of positive squares in 4 ways, for example, as 7892723281 + 12550496841 = 88841^2 + 112029^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20443220093 and 20443220102.

It is not an unprimeable number, because it can be changed into a prime (20443220129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181797 + ... + 271912.

Almost surely, 2^20443220122 is an apocalyptic number.

20443220122 is a deficient number, since it is larger than the sum of its proper divisors (12599571758).

20443220122 is a wasteful number, since it uses less digits than its factorization.

20443220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455457.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 20443220122 its reverse (22102234402), we get a palindrome (42545454524).

The spelling of 20443220122 in words is "twenty billion, four hundred forty-three million, two hundred twenty thousand, one hundred twenty-two".