22220212222 has 32 divisors (see below), whose sum is σ = 36274613760. Its totient is φ = 10147057920.

The previous prime is 22220212199. The next prime is 22220212229. The reversal of 22220212222 is 22221202222.

It is a self number, because there is not a number n which added to its sum of digits gives 22220212222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220212229) 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, 2151523 + ... + 2161825.

It is an arithmetic number, because the mean of its divisors is an integer number (1133581680).

Almost surely, 2^22220212222 is an apocalyptic number.

22220212222 is a deficient number, since it is larger than the sum of its proper divisors (14054401538).

22220212222 is a wasteful number, since it uses less digits than its factorization.

22220212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11188.

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 22220212222 its reverse (22221202222), we get a palindrome (44441414444).

The spelling of 22220212222 in words is "twenty-two billion, two hundred twenty million, two hundred twelve thousand, two hundred twenty-two".