22222220022 has 16 divisors (see below), whose sum is σ = 49382711280. Its totient is φ = 7407406656.

The previous prime is 22222220011. The next prime is 22222220077. The reversal of 22222220022 is 22002222222.

22222220022 is a `hidden beast` number, since 222 + 222 + 200 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 22222219977 and 22222220004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205761243 + ... + 205761350.

It is an arithmetic number, because the mean of its divisors is an integer number (3086419455).

Almost surely, 2^22222220022 is an apocalyptic number.

22222220022 is an abundant number, since it is smaller than the sum of its proper divisors (27160491258).

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

22222220022 is a wasteful number, since it uses less digits than its factorization.

22222220022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411522604 (or 411522598 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 22222220022 its reverse (22002222222), we get a palindrome (44224442244).

It can be divided in two parts, 222222200 and 22, that added together give a palindrome (222222222).

The spelling of 22222220022 in words is "twenty-two billion, two hundred twenty-two million, two hundred twenty thousand, twenty-two".