22208022 has 12 divisors (see below), whose sum is σ = 48117420. Its totient is φ = 7402668.

The previous prime is 22208009. The next prime is 22208027. The reversal of 22208022 is 22080222.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1233779 = 22208022 / (2 + 2 + 2 + 0 + 8 + 0 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 22207986 and 22208004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22208027) 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 5 ways as a sum of consecutive naturals, for example, 616872 + ... + 616907.

It is an arithmetic number, because the mean of its divisors is an integer number (4009785).

Almost surely, 2^22208022 is an apocalyptic number.

22208022 is an abundant number, since it is smaller than the sum of its proper divisors (25909398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22208022 is a wasteful number, since it uses less digits than its factorization.

22208022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233787 (or 1233784 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 22208022 is about 4712.5388062063. The cubic root of 22208022 is about 281.0843243507.

Adding to 22208022 its reverse (22080222), we get a palindrome (44288244).

The spelling of 22208022 in words is "twenty-two million, two hundred eight thousand, twenty-two".