111111100001123 has 2 divisors, whose sum is σ = 111111100001124. Its totient is φ = 111111100001122.

The previous prime is 111111100001087. The next prime is 111111100001159. The reversal of 111111100001123 is 321100001111111.

It is a balanced prime because it is at equal distance from previous prime (111111100001087) and next prime (111111100001159).

It is a cyclic number.

It is not a de Polignac number, because 111111100001123 - 2⁸ = 111111100000867 is a prime.

It is a super-2 number, since 2×111111100001123² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111111100001098 and 111111100001107.

It is not a weakly prime, because it can be changed into another prime (111111100001023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555550000561 + 55555550000562.

It is an arithmetic number, because the mean of its divisors is an integer number (55555550000562).

Almost surely, 2^{111111100001123} is an apocalyptic number.

111111100001123 is a deficient number, since it is larger than the sum of its proper divisors (1).

111111100001123 is an equidigital number, since it uses as much as digits as its factorization.

111111100001123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 14.

Adding to 111111100001123 its reverse (321100001111111), we get a palindrome (432211101112234).

The spelling of 111111100001123 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred million, one thousand, one hundred twenty-three".