222123011212 has 6 divisors (see below), whose sum is σ = 388715269628. Its totient is φ = 111061505604.

The previous prime is 222123011147. The next prime is 222123011213. The reversal of 222123011212 is 212110321222.

It is a self number, because there is not a number n which added to its sum of digits gives 222123011212.

It is not an unprimeable number, because it can be changed into a prime (222123011213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27765376398 + ... + 27765376405.

Almost surely, 2^222123011212 is an apocalyptic number.

It is an amenable number.

222123011212 is a deficient number, since it is larger than the sum of its proper divisors (166592258416).

222123011212 is a wasteful number, since it uses less digits than its factorization.

222123011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55530752807 (or 55530752805 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 222123011212 its reverse (212110321222), we get a palindrome (434233332434).

The spelling of 222123011212 in words is "two hundred twenty-two billion, one hundred twenty-three million, eleven thousand, two hundred twelve".