22212121112 has 8 divisors (see below), whose sum is σ = 41647727100. Its totient is φ = 11106060552.

The previous prime is 22212121109. The next prime is 22212121117. The reversal of 22212121112 is 21112121222.

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

It is a super-2 number, since 2×22212121112² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212121117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1388257562 + ... + 1388257577.

Almost surely, 2^22212121112 is an apocalyptic number.

It is an amenable number.

22212121112 is a deficient number, since it is larger than the sum of its proper divisors (19435605988).

22212121112 is a wasteful number, since it uses less digits than its factorization.

22212121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2776515145 (or 2776515141 counting only the distinct ones).

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

Adding to 22212121112 its reverse (21112121222), we get a palindrome (43324242334).

The spelling of 22212121112 in words is "twenty-two billion, two hundred twelve million, one hundred twenty-one thousand, one hundred twelve".