111267888011281 has 4 divisors (see below), whose sum is σ = 112014652360500. Its totient is φ = 110521123662064.

The previous prime is 111267888011243. The next prime is 111267888011309. The reversal of 111267888011281 is 182110888762111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17334865482256 + 93933022529025 = 4163516^2 + 9691905^2 .

It is a cyclic number.

It is not a de Polignac number, because 111267888011281 - 2¹³ = 111267888003089 is a prime.

It is a super-2 number, since 2×111267888011281² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111267888011881) 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 in 3 ways as a sum of consecutive naturals, for example, 373382174386 + ... + 373382174683.

It is an arithmetic number, because the mean of its divisors is an integer number (28003663090125).

Almost surely, 2^{111267888011281} is an apocalyptic number.

It is an amenable number.

111267888011281 is a deficient number, since it is larger than the sum of its proper divisors (746764349219).

111267888011281 is an equidigital number, since it uses as much as digits as its factorization.

111267888011281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746764349218.

The product of its (nonzero) digits is 688128, while the sum is 55.

The spelling of 111267888011281 in words is "one hundred eleven trillion, two hundred sixty-seven billion, eight hundred eighty-eight million, eleven thousand, two hundred eighty-one".