111341123421123 has 16 divisors (see below), whose sum is σ = 153812803173120. Its totient is φ = 71556390969504.

The previous prime is 111341123421001. The next prime is 111341123421137. The reversal of 111341123421123 is 321124321143111.

It is not a de Polignac number, because 111341123421123 - 2³⁷ = 111203684467651 is a prime.

It is a super-5 number, since 5×111341123421123⁵ (a number of 71 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (111341123421173) 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 15 ways as a sum of consecutive naturals, for example, 995109711 + ... + 995221592.

It is an arithmetic number, because the mean of its divisors is an integer number (9613300198320).

Almost surely, 2^{111341123421123} is an apocalyptic number.

111341123421123 is a deficient number, since it is larger than the sum of its proper divisors (42471679751997).

111341123421123 is a wasteful number, since it uses less digits than its factorization.

111341123421123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990331978.

The product of its digits is 3456, while the sum is 30.

Adding to 111341123421123 its reverse (321124321143111), we get a palindrome (432465444564234).

The spelling of 111341123421123 in words is "one hundred eleven trillion, three hundred forty-one billion, one hundred twenty-three million, four hundred twenty-one thousand, one hundred twenty-three".