22180601 has 2 divisors, whose sum is σ = 22180602. Its totient is φ = 22180600.

The previous prime is 22180591. The next prime is 22180607. The reversal of 22180601 is 10608122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22090000 + 90601 = 4700^2 + 301^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22180601 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22180607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11090300 + 11090301.

It is an arithmetic number, because the mean of its divisors is an integer number (11090301).

Almost surely, 2^22180601 is an apocalyptic number.

It is an amenable number.

22180601 is a deficient number, since it is larger than the sum of its proper divisors (1).

22180601 is an equidigital number, since it uses as much as digits as its factorization.

22180601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 22180601 is about 4709.6285416156. The cubic root of 22180601 is about 280.9685885786.

Adding to 22180601 its reverse (10608122), we get a palindrome (32788723).

The spelling of 22180601 in words is "twenty-two million, one hundred eighty thousand, six hundred one".