1011112221011 has 4 divisors (see below), whose sum is σ = 1011119826552. Its totient is φ = 1011104615472.

The previous prime is 1011112221001. The next prime is 1011112221017. The reversal of 1011112221011 is 1101222111101.

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 1011112221011 - 2⁶ = 1011112220947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011112221017) 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 3 ways as a sum of consecutive naturals, for example, 3599741 + ... + 3870446.

It is an arithmetic number, because the mean of its divisors is an integer number (252779956638).

Almost surely, 2^{1011112221011} is an apocalyptic number.

1011112221011 is a deficient number, since it is larger than the sum of its proper divisors (7605541).

1011112221011 is an equidigital number, since it uses as much as digits as its factorization.

1011112221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7605540.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1011112221011 its reverse (1101222111101), we get a palindrome (2112334332112).

The spelling of 1011112221011 in words is "one trillion, eleven billion, one hundred twelve million, two hundred twenty-one thousand, eleven".