111221101133 has 2 divisors, whose sum is σ = 111221101134. Its totient is φ = 111221101132.

The previous prime is 111221101093. The next prime is 111221101139. The reversal of 111221101133 is 331101122111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111130223044 + 90878089 = 333362^2 + 9533^2 .

It is a cyclic number.

It is not a de Polignac number, because 111221101133 - 2¹² = 111221097037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111221101139) 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, 55610550566 + 55610550567.

It is an arithmetic number, because the mean of its divisors is an integer number (55610550567).

Almost surely, 2^111221101133 is an apocalyptic number.

It is an amenable number.

111221101133 is a deficient number, since it is larger than the sum of its proper divisors (1).

111221101133 is an equidigital number, since it uses as much as digits as its factorization.

111221101133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 111221101133 its reverse (331101122111), we get a palindrome (442322223244).

The spelling of 111221101133 in words is "one hundred eleven billion, two hundred twenty-one million, one hundred one thousand, one hundred thirty-three".