111011111222201 has 2 divisors, whose sum is σ = 111011111222202. Its totient is φ = 111011111222200.

The previous prime is 111011111222161. The next prime is 111011111222233. The reversal of 111011111222201 is 102222111110111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110759206608400 + 251904613801 = 10524220^2 + 501901^2 .

It is a cyclic number.

It is not a de Polignac number, because 111011111222201 - 2²² = 111011107027897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111011111222201.

It is not a weakly prime, because it can be changed into another prime (111011111222701) 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 as a sum of consecutive naturals, namely, 55505555611100 + 55505555611101.

It is an arithmetic number, because the mean of its divisors is an integer number (55505555611101).

Almost surely, 2^{111011111222201} is an apocalyptic number.

It is an amenable number.

111011111222201 is a deficient number, since it is larger than the sum of its proper divisors (1).

111011111222201 is an equidigital number, since it uses as much as digits as its factorization.

111011111222201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111011111222201 its reverse (102222111110111), we get a palindrome (213233222332312).

The spelling of 111011111222201 in words is "one hundred eleven trillion, eleven billion, one hundred eleven million, two hundred twenty-two thousand, two hundred one".