22051223 has 8 divisors (see below), whose sum is σ = 23429280. Its totient is φ = 20714400.

The previous prime is 22051219. The next prime is 22051231. The reversal of 22051223 is 32215022.

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 22051223 - 2² = 22051219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22051213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9203 + ... + 11348.

It is an arithmetic number, because the mean of its divisors is an integer number (2928660).

Almost surely, 2^22051223 is an apocalyptic number.

22051223 is a deficient number, since it is larger than the sum of its proper divisors (1378057).

22051223 is a wasteful number, since it uses less digits than its factorization.

22051223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20617.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 22051223 is about 4695.8729752837. The cubic root of 22051223 is about 280.4212324760.

Adding to 22051223 its reverse (32215022), we get a palindrome (54266245).

The spelling of 22051223 in words is "twenty-two million, fifty-one thousand, two hundred twenty-three".