111043112221 has 2 divisors, whose sum is σ = 111043112222. Its totient is φ = 111043112220.

The previous prime is 111043112207. The next prime is 111043112239. The reversal of 111043112221 is 122211340111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92461605625 + 18581506596 = 304075^2 + 136314^2 .

It is a cyclic number.

It is not a de Polignac number, because 111043112221 - 2⁵ = 111043112189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111043112261) 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, 55521556110 + 55521556111.

It is an arithmetic number, because the mean of its divisors is an integer number (55521556111).

Almost surely, 2^111043112221 is an apocalyptic number.

It is an amenable number.

111043112221 is a deficient number, since it is larger than the sum of its proper divisors (1).

111043112221 is an equidigital number, since it uses as much as digits as its factorization.

111043112221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 111043112221 its reverse (122211340111), we get a palindrome (233254452332).

The spelling of 111043112221 in words is "one hundred eleven billion, forty-three million, one hundred twelve thousand, two hundred twenty-one".