111011231201123 has 16 divisors (see below), whose sum is σ = 125311868035200. Its totient is φ = 97464786175680.

The previous prime is 111011231201119. The next prime is 111011231201159. The reversal of 111011231201123 is 321102132110111.

It is not a de Polignac number, because 111011231201123 - 2² = 111011231201119 is a prime.

It is a super-2 number, since 2×111011231201123² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111011231201095 and 111011231201104.

It is not an unprimeable number, because it can be changed into a prime (111011231201623) 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 in 15 ways as a sum of consecutive naturals, for example, 1318475033 + ... + 1318559226.

It is an arithmetic number, because the mean of its divisors is an integer number (7831991752200).

Almost surely, 2^{111011231201123} is an apocalyptic number.

111011231201123 is a deficient number, since it is larger than the sum of its proper divisors (14300636834077).

111011231201123 is a wasteful number, since it uses less digits than its factorization.

111011231201123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2637034402.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 111011231201123 its reverse (321102132110111), we get a palindrome (432113363311234).

The spelling of 111011231201123 in words is "one hundred eleven trillion, eleven billion, two hundred thirty-one million, two hundred one thousand, one hundred twenty-three".