222123120312 has 64 divisors (see below), whose sum is σ = 571845970080. Its totient is φ = 71846687232.

The previous prime is 222123120311. The next prime is 222123120337. The reversal of 222123120312 is 213021321222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222123120311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4083 + ... + 666530.

Almost surely, 2^222123120312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222123120312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285922985040).

222123120312 is an abundant number, since it is smaller than the sum of its proper divisors (349722849768).

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

222123120312 is a wasteful number, since it uses less digits than its factorization.

222123120312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671032 (or 671028 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 222123120312 its reverse (213021321222), we get a palindrome (435144441534).

The spelling of 222123120312 in words is "two hundred twenty-two billion, one hundred twenty-three million, one hundred twenty thousand, three hundred twelve".