111222220073 has 2 divisors, whose sum is σ = 111222220074. Its totient is φ = 111222220072.

The previous prime is 111222220049. The next prime is 111222220079. The reversal of 111222220073 is 370022222111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101533361449 + 9688858624 = 318643^2 + 98432^2 .

It is a cyclic number.

It is not a de Polignac number, because 111222220073 - 2¹⁰ = 111222219049 is a prime.

It is not a weakly prime, because it can be changed into another prime (111222220079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55611110036 + 55611110037.

It is an arithmetic number, because the mean of its divisors is an integer number (55611110037).

Almost surely, 2^111222220073 is an apocalyptic number.

It is an amenable number.

111222220073 is a deficient number, since it is larger than the sum of its proper divisors (1).

111222220073 is an equidigital number, since it uses as much as digits as its factorization.

111222220073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 111222220073 its reverse (370022222111), we get a palindrome (481244442184).

The spelling of 111222220073 in words is "one hundred eleven billion, two hundred twenty-two million, two hundred twenty thousand, seventy-three".