111140143220221 has 2 divisors, whose sum is σ = 111140143220222. Its totient is φ = 111140143220220.

The previous prime is 111140143220191. The next prime is 111140143220233. The reversal of 111140143220221 is 122022341041111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90209838468996 + 20930304751225 = 9497886^2 + 4574965^2 .

It is a cyclic number.

It is not a de Polignac number, because 111140143220221 - 2³³ = 111131553285629 is a prime.

It is a super-2 number, since 2×111140143220221² (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 (111140143229221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55570071610110 + 55570071610111.

It is an arithmetic number, because the mean of its divisors is an integer number (55570071610111).

Almost surely, 2^{111140143220221} is an apocalyptic number.

It is an amenable number.

111140143220221 is a deficient number, since it is larger than the sum of its proper divisors (1).

111140143220221 is an equidigital number, since it uses as much as digits as its factorization.

111140143220221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 25.

Adding to 111140143220221 its reverse (122022341041111), we get a palindrome (233162484261332).

The spelling of 111140143220221 in words is "one hundred eleven trillion, one hundred forty billion, one hundred forty-three million, two hundred twenty thousand, two hundred twenty-one".