1122222212112 has 20 divisors (see below), whose sum is σ = 2899074048080. Its totient is φ = 374074070688.

The previous prime is 1122222212101. The next prime is 1122222212143. The reversal of 1122222212112 is 2112122222211.

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11689814662 + ... + 11689814757.

It is an arithmetic number, because the mean of its divisors is an integer number (144953702404).

Almost surely, 2^{1122222212112} is an apocalyptic number.

1122222212112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1122222212112 is an abundant number, since it is smaller than the sum of its proper divisors (1776851835968).

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

1122222212112 is a wasteful number, since it uses less digits than its factorization.

1122222212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23379629430 (or 23379629424 counting only the distinct ones).

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

Adding to 1122222212112 its reverse (2112122222211), we get a palindrome (3234344434323).

The spelling of 1122222212112 in words is "one trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred twelve thousand, one hundred twelve".