111221011102241 has 2 divisors, whose sum is σ = 111221011102242. Its totient is φ = 111221011102240.

The previous prime is 111221011102163. The next prime is 111221011102247. The reversal of 111221011102241 is 142201110122111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106998253248016 + 4222757854225 = 10343996^2 + 2054935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111221011102241 is a prime.

It is a super-2 number, since 2×111221011102241² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111221011102247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610505551120 + 55610505551121.

It is an arithmetic number, because the mean of its divisors is an integer number (55610505551121).

Almost surely, 2^{111221011102241} is an apocalyptic number.

It is an amenable number.

111221011102241 is a deficient number, since it is larger than the sum of its proper divisors (1).

111221011102241 is an equidigital number, since it uses as much as digits as its factorization.

111221011102241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 111221011102241 its reverse (142201110122111), we get a palindrome (253422121224352).

The spelling of 111221011102241 in words is "one hundred eleven trillion, two hundred twenty-one billion, eleven million, one hundred two thousand, two hundred forty-one".