111105104221 has 2 divisors, whose sum is σ = 111105104222. Its totient is φ = 111105104220.

The previous prime is 111105104203. The next prime is 111105104263. The reversal of 111105104221 is 122401501111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77429184121 + 33675920100 = 278261^2 + 183510^2 .

It is a cyclic number.

It is not a de Polignac number, because 111105104221 - 2¹³ = 111105096029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111105104321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55552552110 + 55552552111.

It is an arithmetic number, because the mean of its divisors is an integer number (55552552111).

Almost surely, 2^111105104221 is an apocalyptic number.

It is an amenable number.

111105104221 is a deficient number, since it is larger than the sum of its proper divisors (1).

111105104221 is an equidigital number, since it uses as much as digits as its factorization.

111105104221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 19.

Adding to 111105104221 its reverse (122401501111), we get a palindrome (233506605332).

The spelling of 111105104221 in words is "one hundred eleven billion, one hundred five million, one hundred four thousand, two hundred twenty-one".