22021163 has 2 divisors, whose sum is σ = 22021164. Its totient is φ = 22021162.

The previous prime is 22021159. The next prime is 22021177. The reversal of 22021163 is 36112022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22021163 - 2² = 22021159 is a prime.

It is not a weakly prime, because it can be changed into another prime (22021123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010581 + 11010582.

It is an arithmetic number, because the mean of its divisors is an integer number (11010582).

Almost surely, 2^22021163 is an apocalyptic number.

22021163 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021163 is an equidigital number, since it uses as much as digits as its factorization.

22021163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 22021163 is about 4692.6712009260. The cubic root of 22021163 is about 280.2937520868.

Adding to 22021163 its reverse (36112022), we get a palindrome (58133185).

The spelling of 22021163 in words is "twenty-two million, twenty-one thousand, one hundred sixty-three".