212223321112 has 64 divisors (see below), whose sum is σ = 437910675840. Its totient is φ = 95618515200.

The previous prime is 212223321097. The next prime is 212223321127. The reversal of 212223321112 is 211123322212.

212223321112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (212223321097) and next prime (212223321127).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10445748 + ... + 10466044.

It is an arithmetic number, because the mean of its divisors is an integer number (6842354310).

Almost surely, 2^212223321112 is an apocalyptic number.

212223321112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212223321112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218955337920).

212223321112 is an abundant number, since it is smaller than the sum of its proper divisors (225687354728).

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

212223321112 is a wasteful number, since it uses less digits than its factorization.

212223321112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21352 (or 21348 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

Adding to 212223321112 its reverse (211123322212), we get a palindrome (423346643324).

It can be divided in two parts, 212223 and 321112, that added together give a palindrome (533335).

The spelling of 212223321112 in words is "two hundred twelve billion, two hundred twenty-three million, three hundred twenty-one thousand, one hundred twelve".