111107777811111 has 80 divisors (see below), whose sum is σ = 170755244558976. Its totient is φ = 71998560007200.

The previous prime is 111107777811077. The next prime is 111107777811139. The reversal of 111107777811111 is 111118777701111.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is an ABA number since it can be written as A⋅B^A, here for A=3, B=33333.

It is not a de Polignac number, because 111107777811111 - 2⁹ = 111107777810599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111107777811011) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 409991799906 + ... + 409991800176.

Almost surely, 2^{111107777811111} is an apocalyptic number.

111107777811111 is a deficient number, since it is larger than the sum of its proper divisors (59647466747865).

111107777811111 is an frugal number, since it uses more digits than its factorization.

111107777811111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948 (or 315 counting only the distinct ones).

The product of its (nonzero) digits is 19208, while the sum is 45.

It can be divided in two parts, 1111077778 and 11111, that added together give a square (1111088889 = 33333²).

The spelling of 111107777811111 in words is "one hundred eleven trillion, one hundred seven billion, seven hundred seventy-seven million, eight hundred eleven thousand, one hundred eleven".