11100220110121 has 6 divisors (see below), whose sum is σ = 11715190753722. Its totient is φ = 10515997998720.

The previous prime is 11100220110113. The next prime is 11100220110143. The reversal of 11100220110121 is 12101102200111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6190960090896 + 4909260019225 = 2488164^2 + 2215685^2 .

It is not a de Polignac number, because 11100220110121 - 2³ = 11100220110113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11100220110101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15374265720 + ... + 15374266441.

It is an arithmetic number, because the mean of its divisors is an integer number (1952531792287).

Almost surely, 2^{11100220110121} is an apocalyptic number.

It is an amenable number.

11100220110121 is a deficient number, since it is larger than the sum of its proper divisors (614970643601).

11100220110121 is an equidigital number, since it uses as much as digits as its factorization.

11100220110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30748532199 (or 30748532180 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11100220110121 its reverse (12101102200111), we get a palindrome (23201322310232).

The spelling of 11100220110121 in words is "eleven trillion, one hundred billion, two hundred twenty million, one hundred ten thousand, one hundred twenty-one".