11122111220111 has 8 divisors (see below), whose sum is σ = 11247452400240. Its totient is φ = 10996778343232.

The previous prime is 11122111220039. The next prime is 11122111220119. The reversal of 11122111220111 is 11102211122111.

11122111220111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11122111220111 - 2¹⁴ = 11122111203727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11122111220111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122111220119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638141 + ... + 4759353.

It is an arithmetic number, because the mean of its divisors is an integer number (1405931550030).

Almost surely, 2^{11122111220111} is an apocalyptic number.

11122111220111 is a deficient number, since it is larger than the sum of its proper divisors (125341180129).

11122111220111 is an equidigital number, since it uses as much as digits as its factorization.

11122111220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4151625.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 11122111220111 its reverse (11102211122111), we get a palindrome (22224322342222).

The spelling of 11122111220111 in words is "eleven trillion, one hundred twenty-two billion, one hundred eleven million, two hundred twenty thousand, one hundred eleven".