1111211113111 has 32 divisors (see below), whose sum is σ = 1278755444736. Its totient is φ = 955762236000.

The previous prime is 1111211113109. The next prime is 1111211113141. The reversal of 1111211113111 is 1113111121111.

It is not a de Polignac number, because 1111211113111 - 2¹ = 1111211113109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111211113141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10120296 + ... + 10229506.

It is an arithmetic number, because the mean of its divisors is an integer number (39961107648).

Almost surely, 2^{1111211113111} is an apocalyptic number.

1111211113111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1111211113111 is a deficient number, since it is larger than the sum of its proper divisors (167544331625).

1111211113111 is a wasteful number, since it uses less digits than its factorization.

1111211113111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109683.

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

Adding to 1111211113111 its reverse (1113111121111), we get a palindrome (2224322234222).

The spelling of 1111211113111 in words is "one trillion, one hundred eleven billion, two hundred eleven million, one hundred thirteen thousand, one hundred eleven".