11000220121 has 4 divisors (see below), whose sum is σ = 12000240144. Its totient is φ = 10000200100.

The previous prime is 11000220113. The next prime is 11000220163. The reversal of 11000220121 is 12102200011.

11000220121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11000220121 - 2³ = 11000220113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11000220098 and 11000220107.

It is not an unprimeable number, because it can be changed into a prime (11000220181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500009995 + ... + 500010016.

It is an arithmetic number, because the mean of its divisors is an integer number (3000060036).

Almost surely, 2^11000220121 is an apocalyptic number.

11000220121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11000220121 is a deficient number, since it is larger than the sum of its proper divisors (1000020023).

11000220121 is a wasteful number, since it uses less digits than its factorization.

11000220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000020022.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 11000220121 its reverse (12102200011), we get a palindrome (23102420132).

The spelling of 11000220121 in words is "eleven billion, two hundred twenty thousand, one hundred twenty-one".