222111222221012 has 12 divisors (see below), whose sum is σ = 388768019070900. Its totient is φ = 111034645343616.

The previous prime is 222111222220913. The next prime is 222111222221027. The reversal of 222111222221012 is 210122222111222.

It can be written as a sum of positive squares in 2 ways, for example, as 118399077125956 + 103712145095056 = 10881134^2 + 10183916^2 .

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, 5241417887 + ... + 5241460262.

It is an arithmetic number, because the mean of its divisors is an integer number (32397334922575).

Almost surely, 2^{222111222221012} is an apocalyptic number.

It is an amenable number.

222111222221012 is a deficient number, since it is larger than the sum of its proper divisors (166656796849888).

222111222221012 is a wasteful number, since it uses less digits than its factorization.

222111222221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10482883450 (or 10482883448 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 222111222221012 its reverse (210122222111222), we get a palindrome (432233444332234).

The spelling of 222111222221012 in words is "two hundred twenty-two trillion, one hundred eleven billion, two hundred twenty-two million, two hundred twenty-one thousand, twelve".