11121200021011 has 4 divisors (see below), whose sum is σ = 11153065924000. Its totient is φ = 11089334118024.

The previous prime is 11121200021003. The next prime is 11121200021147. The reversal of 11121200021011 is 11012000212111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11121200021011 - 2³ = 11121200021003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11121200020982 and 11121200021000.

It is not an unprimeable number, because it can be changed into a prime (11121200001011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15932950971 + ... + 15932951668.

It is an arithmetic number, because the mean of its divisors is an integer number (2788266481000).

Almost surely, 2^{11121200021011} is an apocalyptic number.

11121200021011 is a deficient number, since it is larger than the sum of its proper divisors (31865902989).

11121200021011 is an equidigital number, since it uses as much as digits as its factorization.

11121200021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31865902988.

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

Adding to 11121200021011 its reverse (11012000212111), we get a palindrome (22133200233122).

The spelling of 11121200021011 in words is "eleven trillion, one hundred twenty-one billion, two hundred million, twenty-one thousand, eleven".