1121111101111 has 4 divisors (see below), whose sum is σ = 1127374291800. Its totient is φ = 1114847910424.

The previous prime is 1121111101069. The next prime is 1121111101153. The reversal of 1121111101111 is 1111011111211.

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

It is an interprime number because it is at equal distance from previous prime (1121111101069) and next prime (1121111101153).

It is a cyclic number.

It is not a de Polignac number, because 1121111101111 - 2⁷ = 1121111100983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121111101091 and 1121111101100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121111101511) 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, 3131595076 + ... + 3131595433.

It is an arithmetic number, because the mean of its divisors is an integer number (281843572950).

Almost surely, 2^{1121111101111} is an apocalyptic number.

1121111101111 is a deficient number, since it is larger than the sum of its proper divisors (6263190689).

1121111101111 is an equidigital number, since it uses as much as digits as its factorization.

1121111101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6263190688.

The product of its (nonzero) digits is 2, while the sum is 13.

Adding to 1121111101111 its reverse (1111011111211), we get a palindrome (2232122212322).

The spelling of 1121111101111 in words is "one trillion, one hundred twenty-one billion, one hundred eleven million, one hundred one thousand, one hundred eleven".