11020110121 has 4 divisors (see below), whose sum is σ = 11020767700. Its totient is φ = 11019452544.

The previous prime is 11020110109. The next prime is 11020110161. The reversal of 11020110121 is 12101102011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12101102011 = 43 ⋅281420977.

It can be written as a sum of positive squares in 2 ways, for example, as 2177528896 + 8842581225 = 46664^2 + 94035^2 .

It is a cyclic number.

It is not a de Polignac number, because 11020110121 - 2⁵ = 11020110089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11020110098 and 11020110107.

It is not an unprimeable number, because it can be changed into a prime (11020110161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302976 + ... + 337393.

It is an arithmetic number, because the mean of its divisors is an integer number (2755191925).

Almost surely, 2^11020110121 is an apocalyptic number.

It is an amenable number.

11020110121 is a deficient number, since it is larger than the sum of its proper divisors (657579).

11020110121 is an equidigital number, since it uses as much as digits as its factorization.

11020110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657578.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 11020110121 its reverse (12101102011), we get a palindrome (23121212132).

The spelling of 11020110121 in words is "eleven billion, twenty million, one hundred ten thousand, one hundred twenty-one".