111205256011 has 4 divisors (see below), whose sum is σ = 111207799672. Its totient is φ = 111202712352.

The previous prime is 111205255979. The next prime is 111205256053. The reversal of 111205256011 is 110652502111.

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

It is a cyclic number.

It is not a de Polignac number, because 111205256011 - 2⁵ = 111205255979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111205256111) 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, 1205085 + ... + 1294078.

It is an arithmetic number, because the mean of its divisors is an integer number (27801949918).

Almost surely, 2^111205256011 is an apocalyptic number.

111205256011 is a deficient number, since it is larger than the sum of its proper divisors (2543661).

111205256011 is an equidigital number, since it uses as much as digits as its factorization.

111205256011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2543660.

The product of its (nonzero) digits is 600, while the sum is 25.

Adding to 111205256011 its reverse (110652502111), we get a palindrome (221857758122).

The spelling of 111205256011 in words is "one hundred eleven billion, two hundred five million, two hundred fifty-six thousand, eleven".