22160081 has 4 divisors (see below), whose sum is σ = 22169712. Its totient is φ = 22150452.

The previous prime is 22160059. The next prime is 22160111. The reversal of 22160081 is 18006122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 18006122 = 2 ⋅9003061.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22160081 is a prime.

It is a super-2 number, since 2×22160081² = 982138379853122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22160041) 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, 890 + ... + 6716.

It is an arithmetic number, because the mean of its divisors is an integer number (5542428).

Almost surely, 2^22160081 is an apocalyptic number.

It is an amenable number.

22160081 is a deficient number, since it is larger than the sum of its proper divisors (9631).

22160081 is an equidigital number, since it uses as much as digits as its factorization.

22160081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9630.

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

The square root of 22160081 is about 4707.4495217687. The cubic root of 22160081 is about 280.8819174330.

The spelling of 22160081 in words is "twenty-two million, one hundred sixty thousand, eighty-one".