22022722 has 8 divisors (see below), whose sum is σ = 33432336. Its totient is φ = 10878612.

The previous prime is 22022717. The next prime is 22022723. The reversal of 22022722 is 22722022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×22022722³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22022722.

It is not an unprimeable number, because it can be changed into a prime (22022723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66168 + ... + 66499.

It is an arithmetic number, because the mean of its divisors is an integer number (4179042).

Almost surely, 2^22022722 is an apocalyptic number.

22022722 is a deficient number, since it is larger than the sum of its proper divisors (11409614).

22022722 is a wasteful number, since it uses less digits than its factorization.

22022722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132752.

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 22022722 is about 4692.8373080685. The cubic root of 22022722 is about 280.3003664460.

Adding to 22022722 its reverse (22722022), we get a palindrome (44744744).

The spelling of 22022722 in words is "twenty-two million, twenty-two thousand, seven hundred twenty-two".