11000121211 has 4 divisors (see below), whose sum is σ = 11012927800. Its totient is φ = 10987314624.

The previous prime is 11000121203. The next prime is 11000121217. The reversal of 11000121211 is 11212100011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11212100011 = 7 ⋅1601728573.

It is a cyclic number.

It is not a de Polignac number, because 11000121211 - 2³ = 11000121203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11000121217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6402006 + ... + 6403723.

It is an arithmetic number, because the mean of its divisors is an integer number (2753231950).

Almost surely, 2^11000121211 is an apocalyptic number.

11000121211 is a deficient number, since it is larger than the sum of its proper divisors (12806589).

11000121211 is an equidigital number, since it uses as much as digits as its factorization.

11000121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12806588.

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

Adding to 11000121211 its reverse (11212100011), we get a palindrome (22212221222).

The spelling of 11000121211 in words is "eleven billion, one hundred twenty-one thousand, two hundred eleven".