22201165066 has 4 divisors (see below), whose sum is σ = 33301747602. Its totient is φ = 11100582532.

The previous prime is 22201165061. The next prime is 22201165067. The reversal of 22201165066 is 66056110222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20740320225 + 1460844841 = 144015^2 + 38221^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (22201165061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550291265 + ... + 5550291268.

Almost surely, 2^22201165066 is an apocalyptic number.

22201165066 is a deficient number, since it is larger than the sum of its proper divisors (11100582536).

22201165066 is a wasteful number, since it uses less digits than its factorization.

22201165066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11100582535.

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 22201165066 its reverse (66056110222), we get a palindrome (88257275288).

The spelling of 22201165066 in words is "twenty-two billion, two hundred one million, one hundred sixty-five thousand, sixty-six".