1111101011111 has 12 divisors (see below), whose sum is σ = 1391928739992. Its totient is φ = 879112887408.

The previous prime is 1111101011087. The next prime is 1111101011129.

1111101011111 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1111101011111 - 2¹⁴ = 1111100994727 is a prime.

1111101011111 is a strobogrammatic number because it is the same when read upside-down.

It is a junction number, because it is equal to n+sod(n) for n = 1111101011092 and 1111101011101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111101011311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 872135165 + ... + 872136438.

It is an arithmetic number, because the mean of its divisors is an integer number (115994061666).

Almost surely, 2^{1111101011111} is an apocalyptic number.

1111101011111 is a deficient number, since it is larger than the sum of its proper divisors (280827728881).

1111101011111 is a wasteful number, since it uses less digits than its factorization.

1111101011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744271630 (or 1744271623 counting only the distinct ones).

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

Multiplying 1111101011111 by its sum of digits (11), we get a palindrome (12222111122221).

The spelling of 1111101011111 in words is "one trillion, one hundred eleven billion, one hundred one million, eleven thousand, one hundred eleven".