111003313211221 has 2 divisors, whose sum is σ = 111003313211222. Its totient is φ = 111003313211220.

The previous prime is 111003313211207. The next prime is 111003313211239. The reversal of 111003313211221 is 122112313300111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102990529980625 + 8012783230596 = 10148425^2 + 2830686^2 .

It is a cyclic number.

It is not a de Polignac number, because 111003313211221 - 2⁷ = 111003313211093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111003313211192 and 111003313211201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111003313211521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55501656605610 + 55501656605611.

It is an arithmetic number, because the mean of its divisors is an integer number (55501656605611).

Almost surely, 2^{111003313211221} is an apocalyptic number.

It is an amenable number.

111003313211221 is a deficient number, since it is larger than the sum of its proper divisors (1).

111003313211221 is an equidigital number, since it uses as much as digits as its factorization.

111003313211221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 111003313211221 its reverse (122112313300111), we get a palindrome (233115626511332).

The spelling of 111003313211221 in words is "one hundred eleven trillion, three billion, three hundred thirteen million, two hundred eleven thousand, two hundred twenty-one".