221012222001111 has 24 divisors (see below), whose sum is σ = 331555497691600. Its totient is φ = 147122548860672.

The previous prime is 221012222001059. The next prime is 221012222001139. The reversal of 221012222001111 is 111100222210122.

221012222001111 is a `hidden beast` number, since 2 + 210 + 122 + 220 + 0 + 1 + 111 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-221012222001111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221012222002111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 675553636 + ... + 675880713.

Almost surely, 2^{221012222001111} is an apocalyptic number.

221012222001111 is a deficient number, since it is larger than the sum of its proper divisors (110543275690489).

221012222001111 is an equidigital number, since it uses as much as digits as its factorization.

221012222001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351435037 (or 1351435025 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 221012222001111 its reverse (111100222210122), we get a palindrome (332112444211233).

The spelling of 221012222001111 in words is "two hundred twenty-one trillion, twelve billion, two hundred twenty-two million, one thousand, one hundred eleven".