222123111212 has 24 divisors (see below), whose sum is σ = 415091026560. Its totient is φ = 103772753280.

The previous prime is 222123111211. The next prime is 222123111251. The reversal of 222123111212 is 212111321222.

It is not an unprimeable number, because it can be changed into a prime (222123111211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30881153 + ... + 30888344.

It is an arithmetic number, because the mean of its divisors is an integer number (17295459440).

Almost surely, 2^222123111212 is an apocalyptic number.

It is an amenable number.

222123111212 is a deficient number, since it is larger than the sum of its proper divisors (192967915348).

222123111212 is a wasteful number, since it uses less digits than its factorization.

222123111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61769561 (or 61769559 counting only the distinct ones).

The product of its digits is 192, while the sum is 20.

Adding to 222123111212 its reverse (212111321222), we get a palindrome (434234432434).

The spelling of 222123111212 in words is "two hundred twenty-two billion, one hundred twenty-three million, one hundred eleven thousand, two hundred twelve".