1011110611111 has 4 divisors (see below), whose sum is σ = 1011144236272. Its totient is φ = 1011076985952.

The previous prime is 1011110611099. The next prime is 1011110611139. The reversal of 1011110611111 is 1111160111101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1011110611111 - 2²¹ = 1011108513959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011110612111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16767435 + ... + 16827628.

It is an arithmetic number, because the mean of its divisors is an integer number (252786059068).

Almost surely, 2^{1011110611111} is an apocalyptic number.

1011110611111 is a deficient number, since it is larger than the sum of its proper divisors (33625161).

1011110611111 is an equidigital number, since it uses as much as digits as its factorization.

1011110611111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33625160.

The product of its (nonzero) digits is 6, while the sum is 16.

Adding to 1011110611111 its reverse (1111160111101), we get a palindrome (2122270722212).

The spelling of 1011110611111 in words is "one trillion, eleven billion, one hundred ten million, six hundred eleven thousand, one hundred eleven".