22005211 has 8 divisors (see below), whose sum is σ = 23240000. Its totient is φ = 20778120.

The previous prime is 22005199. The next prime is 22005241. The reversal of 22005211 is 11250022.

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

It is a cyclic number.

It is not a de Polignac number, because 22005211 - 2⁷ = 22005083 is a prime.

It is a super-2 number, since 2×22005211² = 968458622309042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22005191 and 22005200.

It is not an unprimeable number, because it can be changed into a prime (22005241) 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, 4540 + ... + 8038.

It is an arithmetic number, because the mean of its divisors is an integer number (2905000).

Almost surely, 2^22005211 is an apocalyptic number.

22005211 is a deficient number, since it is larger than the sum of its proper divisors (1234789).

22005211 is a wasteful number, since it uses less digits than its factorization.

22005211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3849.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 22005211 is about 4690.9712213997. The cubic root of 22005211 is about 280.2260546932.

Adding to 22005211 its reverse (11250022), we get a palindrome (33255233).

The spelling of 22005211 in words is "twenty-two million, five thousand, two hundred eleven".