111221112043 has 2 divisors, whose sum is σ = 111221112044. Its totient is φ = 111221112042.

The previous prime is 111221111993. The next prime is 111221112131. The reversal of 111221112043 is 340211122111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111221112043 - 2⁹ = 111221111531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111221112043.

It is not a weakly prime, because it can be changed into another prime (111221112943) 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, 55610556021 + 55610556022.

It is an arithmetic number, because the mean of its divisors is an integer number (55610556022).

Almost surely, 2^111221112043 is an apocalyptic number.

111221112043 is a deficient number, since it is larger than the sum of its proper divisors (1).

111221112043 is an equidigital number, since it uses as much as digits as its factorization.

111221112043 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 111221112043 its reverse (340211122111), we get a palindrome (451432234154).

The spelling of 111221112043 in words is "one hundred eleven billion, two hundred twenty-one million, one hundred twelve thousand, forty-three".