222111102012 has 12 divisors (see below), whose sum is σ = 518259238056. Its totient is φ = 74037034000.

The previous prime is 222111101999. The next prime is 222111102043. The reversal of 222111102012 is 210201111222.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 222111101982 and 222111102000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9254629239 + ... + 9254629262.

It is an arithmetic number, because the mean of its divisors is an integer number (43188269838).

Almost surely, 2^222111102012 is an apocalyptic number.

It is an amenable number.

222111102012 is an abundant number, since it is smaller than the sum of its proper divisors (296148136044).

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

222111102012 is a wasteful number, since it uses less digits than its factorization.

222111102012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18509258508 (or 18509258506 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 222111102012 its reverse (210201111222), we get a palindrome (432312213234).

The spelling of 222111102012 in words is "two hundred twenty-two billion, one hundred eleven million, one hundred two thousand, twelve".