11101111012123 has 16 divisors (see below), whose sum is σ = 12151191456000. Its totient is φ = 10057878456480.

The previous prime is 11101111012111. The next prime is 11101111012127. The reversal of 11101111012123 is 32121011110111.

11101111012123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11101111012123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11101111012097 and 11101111012106.

It is not an unprimeable number, because it can be changed into a prime (11101111012127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5882065 + ... + 7536637.

It is an arithmetic number, because the mean of its divisors is an integer number (759449466000).

Almost surely, 2^{11101111012123} is an apocalyptic number.

11101111012123 is a deficient number, since it is larger than the sum of its proper divisors (1050080443877).

11101111012123 is a wasteful number, since it uses less digits than its factorization.

11101111012123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656642.

The product of its (nonzero) digits is 12, while the sum is 16.

Adding to 11101111012123 its reverse (32121011110111), we get a palindrome (43222122122234).

The spelling of 11101111012123 in words is "eleven trillion, one hundred one billion, one hundred eleven million, twelve thousand, one hundred twenty-three".