10221222111112 has 8 divisors (see below), whose sum is σ = 19164791458350. Its totient is φ = 5110611055552.

The previous prime is 10221222111103. The next prime is 10221222111157. The reversal of 10221222111112 is 21111122212201.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8405859309796 + 1815362801316 = 2899286^2 + 1347354^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 10221222111112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638826381937 + ... + 638826381952.

Almost surely, 2^{10221222111112} is an apocalyptic number.

It is an amenable number.

10221222111112 is a deficient number, since it is larger than the sum of its proper divisors (8943569347238).

10221222111112 is a wasteful number, since it uses less digits than its factorization.

10221222111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277652763895 (or 1277652763891 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 10221222111112 its reverse (21111122212201), we get a palindrome (31332344323313).

The spelling of 10221222111112 in words is "ten trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred eleven thousand, one hundred twelve".