212122222112 has 24 divisors (see below), whose sum is σ = 418387591692. Its totient is φ = 105865056000.

The previous prime is 212122222079. The next prime is 212122222127. The reversal of 212122222112 is 211222221212.

It can be written as a sum of positive squares in 2 ways, for example, as 212001310096 + 120912016 = 460436^2 + 10996^2 .

It is a super-2 number, since 2×212122222112² (a number of 23 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6109139 + ... + 6143762.

Almost surely, 2^212122222112 is an apocalyptic number.

It is an amenable number.

212122222112 is a deficient number, since it is larger than the sum of its proper divisors (206265369580).

212122222112 is a wasteful number, since it uses less digits than its factorization.

212122222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12253452 (or 12253444 counting only the distinct ones).

The product of its digits is 256, while the sum is 20.

Adding to 212122222112 its reverse (211222221212), we get a palindrome (423344443324).

The spelling of 212122222112 in words is "two hundred twelve billion, one hundred twenty-two million, two hundred twenty-two thousand, one hundred twelve".