111221010211133 has 2 divisors, whose sum is σ = 111221010211134. Its totient is φ = 111221010211132.

The previous prime is 111221010211057. The next prime is 111221010211237. The reversal of 111221010211133 is 331112010122111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79945826385049 + 31275183826084 = 8941243^2 + 5592422^2 .

It is an emirp because it is prime and its reverse (331112010122111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111221010211133 is a prime.

It is a super-2 number, since 2×111221010211133² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111221010211033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610505105566 + 55610505105567.

It is an arithmetic number, because the mean of its divisors is an integer number (55610505105567).

Almost surely, 2^{111221010211133} is an apocalyptic number.

It is an amenable number.

111221010211133 is a deficient number, since it is larger than the sum of its proper divisors (1).

111221010211133 is an equidigital number, since it uses as much as digits as its factorization.

111221010211133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 111221010211133 its reverse (331112010122111), we get a palindrome (442333020333244).

The spelling of 111221010211133 in words is "one hundred eleven trillion, two hundred twenty-one billion, ten million, two hundred eleven thousand, one hundred thirty-three".