22214209 has 4 divisors (see below), whose sum is σ = 22230100. Its totient is φ = 22198320.

The previous prime is 22214201. The next prime is 22214233. The reversal of 22214209 is 90241222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2985984 + 19228225 = 1728^2 + 4385^2 .

It is a cyclic number.

It is not a de Polignac number, because 22214209 - 2³ = 22214201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22214209.

It is not an unprimeable number, because it can be changed into a prime (22214201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5622 + ... + 8719.

It is an arithmetic number, because the mean of its divisors is an integer number (5557525).

Almost surely, 2^22214209 is an apocalyptic number.

It is an amenable number.

22214209 is a deficient number, since it is larger than the sum of its proper divisors (15891).

22214209 is a wasteful number, since it uses less digits than its factorization.

22214209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15890.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 22214209 is about 4713.1952007104. The cubic root of 22214209 is about 281.1104246377.

The spelling of 22214209 in words is "twenty-two million, two hundred fourteen thousand, two hundred nine".