22166365226 has 4 divisors (see below), whose sum is σ = 33249547842. Its totient is φ = 11083182612.

The previous prime is 22166365211. The next prime is 22166365283. The reversal of 22166365226 is 62256366122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62256366122 = 2 ⋅31128183061.

It can be written as a sum of positive squares in only one way, i.e., 21997339225 + 169026001 = 148315^2 + 13001^2 .

It is an unprimeable number.

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, 5541591305 + ... + 5541591308.

Almost surely, 2^22166365226 is an apocalyptic number.

22166365226 is a deficient number, since it is larger than the sum of its proper divisors (11083182616).

22166365226 is a wasteful number, since it uses less digits than its factorization.

22166365226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11083182615.

The product of its digits is 311040, while the sum is 41.

The spelling of 22166365226 in words is "twenty-two billion, one hundred sixty-six million, three hundred sixty-five thousand, two hundred twenty-six".