22221210112 has 80 divisors (see below), whose sum is σ = 45065097792. Its totient is φ = 10945105920.

The previous prime is 22221210107. The next prime is 22221210131. The reversal of 22221210112 is 21101212222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11126298 + ... + 11128294.

Almost surely, 2^22221210112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22221210112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22532548896).

22221210112 is an abundant number, since it is smaller than the sum of its proper divisors (22843887680).

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

22221210112 is a wasteful number, since it uses less digits than its factorization.

22221210112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2329 (or 2313 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22221210112 its reverse (21101212222), we get a palindrome (43322422334).

It can be divided in two parts, 222212 and 10112, that added together give a square (232324 = 482²).

The spelling of 22221210112 in words is "twenty-two billion, two hundred twenty-one million, two hundred ten thousand, one hundred twelve".