212223000000000 has 1600 divisors, whose sum is σ = 791226481478400. Its totient is φ = 50112000000000.

The previous prime is 212222999999999. The next prime is 212223000000023. The reversal of 212223000000000 is 322212.

It is a tau number, because it is divible by the number of its divisors (1600).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1946999999946 + ... + 1947000000054.

It is an arithmetic number, because the mean of its divisors is an integer number (494516550924).

Almost surely, 2^{212223000000000} is an apocalyptic number.

212223000000000 is a gapful number since it is divisible by the number (20) 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 212223000000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (395613240739200).

212223000000000 is an abundant number, since it is smaller than the sum of its proper divisors (579003481478400).

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

212223000000000 is an frugal number, since it uses more digits than its factorization.

212223000000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 212223000000000 its reverse (322212), we get a palindrome (212223000322212).

The spelling of 212223000000000 in words is "two hundred twelve trillion, two hundred twenty-three billion", and thus it is an aban number.