2221122221112 has 32 divisors (see below), whose sum is σ = 5552844871680. Its totient is φ = 740368831200.

The previous prime is 2221122221039. The next prime is 2221122221173. The reversal of 2221122221112 is 2111222211222.

It is a super-2 number, since 2×2221122221112² (a number of 25 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 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 7 ways as a sum of consecutive naturals, for example, 4718143 + ... + 5167505.

It is an arithmetic number, because the mean of its divisors is an integer number (173526402240).

Almost surely, 2^{2221122221112} is an apocalyptic number.

It is an amenable number.

2221122221112 is an abundant number, since it is smaller than the sum of its proper divisors (3331722650568).

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

2221122221112 is a wasteful number, since it uses less digits than its factorization.

2221122221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655323 (or 655319 counting only the distinct ones).

The product of its digits is 256, while the sum is 21.

Adding to 2221122221112 its reverse (2111222211222), we get a palindrome (4332344432334).

The spelling of 2221122221112 in words is "two trillion, two hundred twenty-one billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred twelve".