22009071 has 8 divisors (see below), whose sum is σ = 33537664. Its totient is φ = 12576600.

The previous prime is 22009063. The next prime is 22009073. The reversal of 22009071 is 17090022.

It is a happy number.

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

It is not a de Polignac number, because 22009071 - 2³ = 22009063 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1048051 = 22009071 / (2 + 2 + 0 + 0 + 9 + 0 + 7 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22009073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 524005 + ... + 524046.

It is an arithmetic number, because the mean of its divisors is an integer number (4192208).

Almost surely, 2^22009071 is an apocalyptic number.

22009071 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22009071 is a deficient number, since it is larger than the sum of its proper divisors (11528593).

22009071 is a wasteful number, since it uses less digits than its factorization.

22009071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048061.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 22009071 is about 4691.3826320180. The cubic root of 22009071 is about 280.2424388326.

Adding to 22009071 its reverse (17090022), we get a palindrome (39099093).

The spelling of 22009071 in words is "twenty-two million, nine thousand, seventy-one".