111221113012201 has 2 divisors, whose sum is σ = 111221113012202. Its totient is φ = 111221113012200.

The previous prime is 111221113012199. The next prime is 111221113012237. The reversal of 111221113012201 is 102210311122111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111008370674601 + 212742337600 = 10536051^2 + 461240^2 .

It is a cyclic number.

It is not a de Polignac number, because 111221113012201 - 2¹ = 111221113012199 is a prime.

Together with 111221113012199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (111221113012601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610556506100 + 55610556506101.

It is an arithmetic number, because the mean of its divisors is an integer number (55610556506101).

Almost surely, 2^{111221113012201} is an apocalyptic number.

It is an amenable number.

111221113012201 is a deficient number, since it is larger than the sum of its proper divisors (1).

111221113012201 is an equidigital number, since it uses as much as digits as its factorization.

111221113012201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 111221113012201 its reverse (102210311122111), we get a palindrome (213431424134312).

The spelling of 111221113012201 in words is "one hundred eleven trillion, two hundred twenty-one billion, one hundred thirteen million, twelve thousand, two hundred one".