22202022222 has 48 divisors (see below), whose sum is σ = 50945132160. Its totient is φ = 6973241616.

The previous prime is 22202022221. The next prime is 22202022233. The reversal of 22202022222 is 22222020222.

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

It is a junction number, because it is equal to n+sod(n) for n = 22202022195 and 22202022204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22202022221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 372472 + ... + 427947.

It is an arithmetic number, because the mean of its divisors is an integer number (1061356920).

Almost surely, 2^22202022222 is an apocalyptic number.

22202022222 is an abundant number, since it is smaller than the sum of its proper divisors (28743109938).

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

22202022222 is a wasteful number, since it uses less digits than its factorization.

22202022222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800517 (or 800514 counting only the distinct ones).

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

Adding to 22202022222 its reverse (22222020222), we get a palindrome (44424042444).

It can be divided in two parts, 222020222 and 22, that multiplied together give a palindrome (4884444884).

The spelling of 22202022222 in words is "twenty-two billion, two hundred two million, twenty-two thousand, two hundred twenty-two".