22221110212 has 12 divisors (see below), whose sum is σ = 44442220480. Its totient is φ = 9523332936.

The previous prime is 22221110207. The next prime is 22221110231. The reversal of 22221110212 is 21201112222.

It is a happy number.

22221110212 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396805512 + ... + 396805567.

Almost surely, 2^22221110212 is an apocalyptic number.

It is an amenable number.

22221110212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22221110212 is a wasteful number, since it uses less digits than its factorization.

22221110212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793611090 (or 793611088 counting only the distinct ones).

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

Adding to 22221110212 its reverse (21201112222), we get a palindrome (43422222434).

The spelling of 22221110212 in words is "twenty-two billion, two hundred twenty-one million, one hundred ten thousand, two hundred twelve".