111111000101111 has 2 divisors, whose sum is σ = 111111000101112. Its totient is φ = 111111000101110.

The previous prime is 111111000101093. The next prime is 111111000101119. The reversal of 111111000101111 is 111101000111111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111111000101111 - 2²⁶ = 111110932992247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111111000101092 and 111111000101101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111111000101119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555500050555 + 55555500050556.

It is an arithmetic number, because the mean of its divisors is an integer number (55555500050556).

Almost surely, 2^{111111000101111} is an apocalyptic number.

111111000101111 is a deficient number, since it is larger than the sum of its proper divisors (1).

111111000101111 is an equidigital number, since it uses as much as digits as its factorization.

111111000101111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1, while the sum is 11.

Adding to 111111000101111 its reverse (111101000111111), we get a palindrome (222212000212222).

It can be divided in two parts, 111111000 and 101111, that added together give a palindrome (111212111).

The spelling of 111111000101111 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred one thousand, one hundred eleven".