22011233 has 4 divisors (see below), whose sum is σ = 22229268. Its totient is φ = 21793200.

The previous prime is 22011221. The next prime is 22011239. The reversal of 22011233 is 33211022.

It is a happy number.

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 20729809 + 1281424 = 4553^2 + 1132^2 .

It is a cyclic number.

It is not a de Polignac number, because 22011233 - 2¹⁴ = 21994849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22011239) 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, 108866 + ... + 109067.

It is an arithmetic number, because the mean of its divisors is an integer number (5557317).

Almost surely, 2^22011233 is an apocalyptic number.

It is an amenable number.

22011233 is a deficient number, since it is larger than the sum of its proper divisors (218035).

22011233 is a wasteful number, since it uses less digits than its factorization.

22011233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218034.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 22011233 is about 4691.6130488351. The cubic root of 22011233 is about 280.2516148115.

Adding to 22011233 its reverse (33211022), we get a palindrome (55222255).

The spelling of 22011233 in words is "twenty-two million, eleven thousand, two hundred thirty-three".