10221222111111 has 32 divisors (see below), whose sum is σ = 16922052887040. Its totient is φ = 6043590302400.

The previous prime is 10221222111103. The next prime is 10221222111157. The reversal of 10221222111111 is 11111122212201.

It is a happy number.

10221222111111 is a `hidden beast` number, since 1 + 0 + 221 + 222 + 111 + 111 = 666.

It is not a de Polignac number, because 10221222111111 - 2³ = 10221222111103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221222111911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 419681595 + ... + 419705948.

It is an arithmetic number, because the mean of its divisors is an integer number (528814152720).

Almost surely, 2^{10221222111111} is an apocalyptic number.

10221222111111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10221222111111 is a deficient number, since it is larger than the sum of its proper divisors (6700830775929).

10221222111111 is a wasteful number, since it uses less digits than its factorization.

10221222111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839387604 (or 839387598 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 10221222111111 its reverse (11111122212201), we get a palindrome (21332344323312).

The spelling of 10221222111111 in words is "ten trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred eleven thousand, one hundred eleven".