22231366 has 4 divisors (see below), whose sum is σ = 33347052. Its totient is φ = 11115682.

The previous prime is 22231361. The next prime is 22231367. The reversal of 22231366 is 66313222.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 22231366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22231361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5557840 + ... + 5557843.

It is an arithmetic number, because the mean of its divisors is an integer number (8336763).

Almost surely, 2^22231366 is an apocalyptic number.

22231366 is a deficient number, since it is larger than the sum of its proper divisors (11115686).

22231366 is a wasteful number, since it uses less digits than its factorization.

22231366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11115685.

The product of its digits is 2592, while the sum is 25.

The square root of 22231366 is about 4715.0149522562. The cubic root of 22231366 is about 281.1827772839.

Adding to 22231366 its reverse (66313222), we get a palindrome (88544588).

The spelling of 22231366 in words is "twenty-two million, two hundred thirty-one thousand, three hundred sixty-six".