22217022222 has 32 divisors (see below), whose sum is σ = 44536861824. Its totient is φ = 7388560800.

The previous prime is 22217022211. The next prime is 22217022229. The reversal of 22217022222 is 22222071222.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22217022192 and 22217022201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22217022229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6017397 + ... + 6021087.

It is an arithmetic number, because the mean of its divisors is an integer number (1391776932).

Almost surely, 2^22217022222 is an apocalyptic number.

22217022222 is an abundant number, since it is smaller than the sum of its proper divisors (22319839602).

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

22217022222 is a wasteful number, since it uses less digits than its factorization.

22217022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5744.

The product of its (nonzero) digits is 1792, while the sum is 24.

Adding to 22217022222 its reverse (22222071222), we get a palindrome (44439093444).

The spelling of 22217022222 in words is "twenty-two billion, two hundred seventeen million, twenty-two thousand, two hundred twenty-two".