22221121112 has 8 divisors (see below), whose sum is σ = 41664602100. Its totient is φ = 11110560552.

The previous prime is 22221121099. The next prime is 22221121121. The reversal of 22221121112 is 21112112222.

It is a tau number, because it is divible by the number of its divisors (8).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1388820062 + ... + 1388820077.

Almost surely, 2^22221121112 is an apocalyptic number.

It is an amenable number.

22221121112 is a deficient number, since it is larger than the sum of its proper divisors (19443480988).

22221121112 is a wasteful number, since it uses less digits than its factorization.

22221121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777640145 (or 2777640141 counting only the distinct ones).

The product of its digits is 64, while the sum is 17.

Adding to 22221121112 its reverse (21112112222), we get a palindrome (43333233334).

The spelling of 22221121112 in words is "twenty-two billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred twelve".