22211202222 has 96 divisors (see below), whose sum is σ = 53046804096. Its totient is φ = 6660763200.

The previous prime is 22211202191. The next prime is 22211202259. The reversal of 22211202222 is 22220211222.

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 = 22211202195 and 22211202204.

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 47 ways as a sum of consecutive naturals, for example, 11489568 + ... + 11491500.

It is an arithmetic number, because the mean of its divisors is an integer number (552570876).

Almost surely, 2^22211202222 is an apocalyptic number.

22211202222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 22211202222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26523402048).

22211202222 is an abundant number, since it is smaller than the sum of its proper divisors (30835601874).

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

22211202222 is a wasteful number, since it uses less digits than its factorization.

22211202222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2526 (or 2523 counting only the distinct ones).

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

Adding to 22211202222 its reverse (22220211222), we get a palindrome (44431413444).

The spelling of 22211202222 in words is "twenty-two billion, two hundred eleven million, two hundred two thousand, two hundred twenty-two".