22071 has 8 divisors (see below), whose sum is σ = 33664. Its totient is φ = 12600.

The previous prime is 22067. The next prime is 22073. The reversal of 22071 is 17022.

22071 = 33² + 34² + ... + 46².

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

It is not a de Polignac number, because 22071 - 2² = 22067 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505 + ... + 546.

It is an arithmetic number, because the mean of its divisors is an integer number (4208).

2²²⁰⁷¹ is an apocalyptic number.

22071 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22071 is a deficient number, since it is larger than the sum of its proper divisors (11593).

22071 is a wasteful number, since it uses less digits than its factorization.

22071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061.

The product of its (nonzero) digits is 28, while the sum is 12.

The square root of 22071 is about 148.5631178994. The cubic root of 22071 is about 28.0505040882.

Adding to 22071 its reverse (17022), we get a palindrome (39093).

The spelling of 22071 in words is "twenty-two thousand, seventy-one", and thus it is an iban number.