11210120021111 has 24 divisors (see below), whose sum is σ = 12791484452880. Its totient is φ = 9742257641600.

The previous prime is 11210120021071. The next prime is 11210120021123. The reversal of 11210120021111 is 11112002101211.

It is a de Polignac number, because none of the positive numbers 2^k-11210120021111 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 (11210120021161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9454805 + ... + 10574193.

It is an arithmetic number, because the mean of its divisors is an integer number (532978518870).

Almost surely, 2^{11210120021111} is an apocalyptic number.

11210120021111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11210120021111 is a deficient number, since it is larger than the sum of its proper divisors (1581364431769).

11210120021111 is a wasteful number, since it uses less digits than its factorization.

11210120021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121167 (or 1121144 counting only the distinct ones).

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

Adding to 11210120021111 its reverse (11112002101211), we get a palindrome (22322122122322).

The spelling of 11210120021111 in words is "eleven trillion, two hundred ten billion, one hundred twenty million, twenty-one thousand, one hundred eleven".