22245722 has 4 divisors (see below), whose sum is σ = 33368586. Its totient is φ = 11122860.

The previous prime is 22245721. The next prime is 22245731. The reversal of 22245722 is 22754222.

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

It can be written as a sum of positive squares in only one way, i.e., 18826921 + 3418801 = 4339^2 + 1849^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22245691 and 22245700.

It is not an unprimeable number, because it can be changed into a prime (22245721) 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 as a sum of consecutive naturals, namely, 5561429 + ... + 5561432.

Almost surely, 2^22245722 is an apocalyptic number.

22245722 is a deficient number, since it is larger than the sum of its proper divisors (11122864).

22245722 is a wasteful number, since it uses less digits than its factorization.

22245722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11122863.

The product of its digits is 4480, while the sum is 26.

The square root of 22245722 is about 4716.5370771361. The cubic root of 22245722 is about 281.2432892555.

Adding to 22245722 its reverse (22754222), we get a palindrome (44999944).

The spelling of 22245722 in words is "twenty-two million, two hundred forty-five thousand, seven hundred twenty-two".