22201663 has 4 divisors (see below), whose sum is σ = 24220008. Its totient is φ = 20183320.

The previous prime is 22201661. The next prime is 22201667. The reversal of 22201663 is 36610222.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22201663 - 2¹ = 22201661 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1009156 + ... + 1009177.

It is an arithmetic number, because the mean of its divisors is an integer number (6055002).

Almost surely, 2^22201663 is an apocalyptic number.

22201663 is a deficient number, since it is larger than the sum of its proper divisors (2018345).

22201663 is a wasteful number, since it uses less digits than its factorization.

22201663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018344.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 22201663 is about 4711.8640684977. The cubic root of 22201663 is about 281.0574934178.

Adding to 22201663 its reverse (36610222), we get a palindrome (58811885).

It can be divided in two parts, 2220 and 1663, that added together give a palindrome (3883).

The spelling of 22201663 in words is "twenty-two million, two hundred one thousand, six hundred sixty-three".