22016161 has 2 divisors, whose sum is σ = 22016162. Its totient is φ = 22016160.

The previous prime is 22016131. The next prime is 22016171. The reversal of 22016161 is 16161022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18190225 + 3825936 = 4265^2 + 1956^2 .

It is a cyclic number.

It is not a de Polignac number, because 22016161 - 2¹⁷ = 21885089 is a prime.

It is a super-2 number, since 2×22016161² = 969422690355842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22016101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11008080 + 11008081.

It is an arithmetic number, because the mean of its divisors is an integer number (11008081).

Almost surely, 2^22016161 is an apocalyptic number.

It is an amenable number.

22016161 is a deficient number, since it is larger than the sum of its proper divisors (1).

22016161 is an equidigital number, since it uses as much as digits as its factorization.

22016161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 22016161 is about 4692.1382119456. The cubic root of 22016161 is about 280.2725280258.

Adding to 22016161 its reverse (16161022), we get a palindrome (38177183).

The spelling of 22016161 in words is "twenty-two million, sixteen thousand, one hundred sixty-one".