22209011 has 4 divisors (see below), whose sum is σ = 24228024. Its totient is φ = 20190000.

The previous prime is 22209001. The next prime is 22209017. The reversal of 22209011 is 11090222.

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

It is a cyclic number.

It is not a de Polignac number, because 22209011 - 2⁶ = 22208947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22209017) 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, 1009490 + ... + 1009511.

It is an arithmetic number, because the mean of its divisors is an integer number (6057006).

Almost surely, 2^22209011 is an apocalyptic number.

22209011 is a deficient number, since it is larger than the sum of its proper divisors (2019013).

22209011 is a wasteful number, since it uses less digits than its factorization.

22209011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019012.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 22209011 is about 4712.6437378609. The cubic root of 22209011 is about 281.0884968410.

Adding to 22209011 its reverse (11090222), we get a palindrome (33299233).

The spelling of 22209011 in words is "twenty-two million, two hundred nine thousand, eleven".