11111012220011 has 4 divisors (see below), whose sum is σ = 12121104240024. Its totient is φ = 10100920200000.

The previous prime is 11111012220001. The next prime is 11111012220013. The reversal of 11111012220011 is 11002221011111.

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 11111012220011 - 2³⁴ = 11093832350827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11111012220013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505046009990 + ... + 505046010011.

It is an arithmetic number, because the mean of its divisors is an integer number (3030276060006).

Almost surely, 2^{11111012220011} is an apocalyptic number.

11111012220011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11111012220011 is a deficient number, since it is larger than the sum of its proper divisors (1010092020013).

11111012220011 is a wasteful number, since it uses less digits than its factorization.

11111012220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010092020012.

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

Adding to 11111012220011 its reverse (11002221011111), we get a palindrome (22113233231122).

The spelling of 11111012220011 in words is "eleven trillion, one hundred eleven billion, twelve million, two hundred twenty thousand, eleven".