22281275666 has 16 divisors (see below), whose sum is σ = 36142187928. Its totient is φ = 10240992000.

The previous prime is 22281275629. The next prime is 22281275669. The reversal of 22281275666 is 66657218222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15296495041 + 6984780625 = 123679^2 + 83575^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22281275666.

It is not an unprimeable number, because it can be changed into a prime (22281275669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1771685 + ... + 1784216.

Almost surely, 2^22281275666 is an apocalyptic number.

22281275666 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

22281275666 is a deficient number, since it is larger than the sum of its proper divisors (13860912262).

22281275666 is a wasteful number, since it uses less digits than its factorization.

22281275666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3556157.

The product of its digits is 967680, while the sum is 47.

The spelling of 22281275666 in words is "twenty-two billion, two hundred eighty-one million, two hundred seventy-five thousand, six hundred sixty-six".