212223313123 has 4 divisors (see below), whose sum is σ = 212386437648. Its totient is φ = 212060188600.

The previous prime is 212223313051. The next prime is 212223313147. The reversal of 212223313123 is 321313322212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212223313123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212223313163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81560311 + ... + 81562912.

It is an arithmetic number, because the mean of its divisors is an integer number (53096609412).

Almost surely, 2^212223313123 is an apocalyptic number.

212223313123 is a deficient number, since it is larger than the sum of its proper divisors (163124525).

212223313123 is a wasteful number, since it uses less digits than its factorization.

212223313123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163124524.

The product of its digits is 2592, while the sum is 25.

Adding to 212223313123 its reverse (321313322212), we get a palindrome (533536635335).

The spelling of 212223313123 in words is "two hundred twelve billion, two hundred twenty-three million, three hundred thirteen thousand, one hundred twenty-three".