11101111221043 has 2 divisors, whose sum is σ = 11101111221044. Its totient is φ = 11101111221042.

The previous prime is 11101111220959. The next prime is 11101111221121. The reversal of 11101111221043 is 34012211110111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11101111221043 - 2²¹ = 11101109123891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11101111221043.

It is not a weakly prime, because it can be changed into another prime (11101111291043) 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, 5550555610521 + 5550555610522.

It is an arithmetic number, because the mean of its divisors is an integer number (5550555610522).

Almost surely, 2^{11101111221043} is an apocalyptic number.

11101111221043 is a deficient number, since it is larger than the sum of its proper divisors (1).

11101111221043 is an equidigital number, since it uses as much as digits as its factorization.

11101111221043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 11101111221043 its reverse (34012211110111), we get a palindrome (45113322331154).

The spelling of 11101111221043 in words is "eleven trillion, one hundred one billion, one hundred eleven million, two hundred twenty-one thousand, forty-three".