111222222211273 has 2 divisors, whose sum is σ = 111222222211274. Its totient is φ = 111222222211272.

The previous prime is 111222222211213. The next prime is 111222222211327. The reversal of 111222222211273 is 372112222222111.

Together with next prime (111222222211327) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102109569885184 + 9112652326089 = 10104928^2 + 3018717^2 .

It is a cyclic number.

It is not a de Polignac number, because 111222222211273 - 2²⁵ = 111222188656841 is a prime.

It is a super-2 number, since 2×111222222211273² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111222222211213) 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, 55611111105636 + 55611111105637.

It is an arithmetic number, because the mean of its divisors is an integer number (55611111105637).

Almost surely, 2^{111222222211273} is an apocalyptic number.

It is an amenable number.

111222222211273 is a deficient number, since it is larger than the sum of its proper divisors (1).

111222222211273 is an equidigital number, since it uses as much as digits as its factorization.

111222222211273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 31.

Adding to 111222222211273 its reverse (372112222222111), we get a palindrome (483334444433384).

The spelling of 111222222211273 in words is "one hundred eleven trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred eleven thousand, two hundred seventy-three".