1112111021111 has 4 divisors (see below), whose sum is σ = 1112118324000. Its totient is φ = 1112103718224.

The previous prime is 1112111021101. The next prime is 1112111021251. The reversal of 1112111021111 is 1111201112111.

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 1112111021111 - 2²⁶ = 1112043912247 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 (1112111021101) 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, 3418046 + ... + 3729243.

It is an arithmetic number, because the mean of its divisors is an integer number (278029581000).

Almost surely, 2^{1112111021111} is an apocalyptic number.

1112111021111 is a deficient number, since it is larger than the sum of its proper divisors (7302889).

1112111021111 is an equidigital number, since it uses as much as digits as its factorization.

1112111021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7302888.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 1112111021111 its reverse (1111201112111), we get a palindrome (2223312133222).

The spelling of 1112111021111 in words is "one trillion, one hundred twelve billion, one hundred eleven million, twenty-one thousand, one hundred eleven".