22021122 has 16 divisors (see below), whose sum is σ = 44764992. Its totient is φ = 7219920.

The previous prime is 22021093. The next prime is 22021123. The reversal of 22021122 is 22112022.

It is a junction number, because it is equal to n+sod(n) for n = 22021098 and 22021107.

It is not an unprimeable number, because it can be changed into a prime (22021123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29718 + ... + 30449.

It is an arithmetic number, because the mean of its divisors is an integer number (2797812).

Almost surely, 2^22021122 is an apocalyptic number.

22021122 is an abundant number, since it is smaller than the sum of its proper divisors (22743870).

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

22021122 is a wasteful number, since it uses less digits than its factorization.

22021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60233.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 22021122 is about 4692.6668324099. Note that the first 3 decimals coincide. The cubic root of 22021122 is about 280.2935781321.

Adding to 22021122 its reverse (22112022), we get a palindrome (44133144).

The spelling of 22021122 in words is "twenty-two million, twenty-one thousand, one hundred twenty-two".