221222111107 has 2 divisors, whose sum is σ = 221222111108. Its totient is φ = 221222111106.

The previous prime is 221222111101. The next prime is 221222111179. The reversal of 221222111107 is 701111222122.

221222111107 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221222111107 is a prime.

It is not a weakly prime, because it can be changed into another prime (221222111101) 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 as a sum of consecutive naturals, namely, 110611055553 + 110611055554.

It is an arithmetic number, because the mean of its divisors is an integer number (110611055554).

Almost surely, 2^221222111107 is an apocalyptic number.

221222111107 is a deficient number, since it is larger than the sum of its proper divisors (1).

221222111107 is an equidigital number, since it uses as much as digits as its factorization.

221222111107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 221222111107 its reverse (701111222122), we get a palindrome (922333333229).

The spelling of 221222111107 in words is "two hundred twenty-one billion, two hundred twenty-two million, one hundred eleven thousand, one hundred seven".