222111021012 has 12 divisors (see below), whose sum is σ = 518259049056. Its totient is φ = 74037007000.

The previous prime is 222111021007. The next prime is 222111021029. The reversal of 222111021012 is 210120111222.

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 = 222111020982 and 222111021000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9254625864 + ... + 9254625887.

It is an arithmetic number, because the mean of its divisors is an integer number (43188254088).

Almost surely, 2^222111021012 is an apocalyptic number.

It is an amenable number.

222111021012 is an abundant number, since it is smaller than the sum of its proper divisors (296148028044).

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

222111021012 is a wasteful number, since it uses less digits than its factorization.

222111021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18509251758 (or 18509251756 counting only the distinct ones).

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

Adding to 222111021012 its reverse (210120111222), we get a palindrome (432231132234).

The spelling of 222111021012 in words is "two hundred twenty-two billion, one hundred eleven million, twenty-one thousand, twelve".