22018071 has 16 divisors (see below), whose sum is σ = 30298464. Its totient is φ = 14212224.

The previous prime is 22018069. The next prime is 22018103. The reversal of 22018071 is 17081022.

It is not a de Polignac number, because 22018071 - 2¹ = 22018069 is a prime.

It is a super-2 number, since 2×22018071² = 969590901122082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22018471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32185 + ... + 32861.

It is an arithmetic number, because the mean of its divisors is an integer number (1893654).

Almost surely, 2^22018071 is an apocalyptic number.

22018071 is a deficient number, since it is larger than the sum of its proper divisors (8280393).

22018071 is a wasteful number, since it uses less digits than its factorization.

22018071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 22018071 is about 4692.3417394729. The cubic root of 22018071 is about 280.2806327547.

Adding to 22018071 its reverse (17081022), we get a palindrome (39099093).

The spelling of 22018071 in words is "twenty-two million, eighteen thousand, seventy-one".