1111021120111 has 4 divisors (see below), whose sum is σ = 1269738422992. Its totient is φ = 952303817232.

The previous prime is 1111021120003. The next prime is 1111021120133. The reversal of 1111021120111 is 1110211201111.

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 1111021120111 - 2⁷ = 1111021119983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111021120091 and 1111021120100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111021123111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79358651430 + ... + 79358651443.

It is an arithmetic number, because the mean of its divisors is an integer number (317434605748).

Almost surely, 2^{1111021120111} is an apocalyptic number.

1111021120111 is a deficient number, since it is larger than the sum of its proper divisors (158717302881).

1111021120111 is an equidigital number, since it uses as much as digits as its factorization.

1111021120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158717302880.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 1111021120111 its reverse (1110211201111), we get a palindrome (2221232321222).

The spelling of 1111021120111 in words is "one trillion, one hundred eleven billion, twenty-one million, one hundred twenty thousand, one hundred eleven".