22221202112 has 28 divisors (see below), whose sum is σ = 46689035400. Its totient is φ = 10457035776.

The previous prime is 22221202049. The next prime is 22221202123. The reversal of 22221202112 is 21120212222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10210862 + ... + 10213037.

It is an arithmetic number, because the mean of its divisors is an integer number (1667465550).

Almost surely, 2^22221202112 is an apocalyptic number.

It is an amenable number.

22221202112 is an abundant number, since it is smaller than the sum of its proper divisors (24467833288).

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

22221202112 is a wasteful number, since it uses less digits than its factorization.

22221202112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20423928 (or 20423918 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22221202112 its reverse (21120212222), we get a palindrome (43341414334).

The spelling of 22221202112 in words is "twenty-two billion, two hundred twenty-one million, two hundred two thousand, one hundred twelve".