22271081 has 8 divisors (see below), whose sum is σ = 25481664. Its totient is φ = 19067760.

The previous prime is 22271027. The next prime is 22271083. The reversal of 22271081 is 18017222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22271081 is a prime.

It is a super-2 number, since 2×22271081² = 992002097817122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22271083) 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 in 7 ways as a sum of consecutive naturals, for example, 9386 + ... + 11516.

It is an arithmetic number, because the mean of its divisors is an integer number (3185208).

Almost surely, 2^22271081 is an apocalyptic number.

It is an amenable number.

22271081 is a deficient number, since it is larger than the sum of its proper divisors (3210583).

22271081 is a wasteful number, since it uses less digits than its factorization.

22271081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3631.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 22271081 is about 4719.2246185152. The cubic root of 22271081 is about 281.3501163903.

The spelling of 22271081 in words is "twenty-two million, two hundred seventy-one thousand, eighty-one".