22220022 has 16 divisors (see below), whose sum is σ = 48480192. Its totient is φ = 6733320.

The previous prime is 22219999. The next prime is 22220027. The reversal of 22220022 is 22002222.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220027) 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, 168268 + ... + 168399.

It is an arithmetic number, because the mean of its divisors is an integer number (3030012).

Almost surely, 2^22220022 is an apocalyptic number.

22220022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22220022 is an abundant number, since it is smaller than the sum of its proper divisors (26260170).

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

22220022 is a wasteful number, since it uses less digits than its factorization.

22220022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336683.

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 22220022 is about 4713.8118333256. The cubic root of 22220022 is about 281.1349427645.

Adding to 22220022 its reverse (22002222), we get a palindrome (44222244).

It can be divided in two parts, 222200 and 22, that added together give a palindrome (222222).

The spelling of 22220022 in words is "twenty-two million, two hundred twenty thousand, twenty-two".