11121200021101 has 4 divisors (see below), whose sum is σ = 11140474198492. Its totient is φ = 11101925843712.

The previous prime is 11121200021003. The next prime is 11121200021147. The reversal of 11121200021101 is 10112000212111.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6114789296100 + 5006410725001 = 2472810^2 + 2237501^2 .

It is a cyclic number.

It is not a de Polignac number, because 11121200021101 - 2⁹ = 11121200020589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121200025101) 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, 9637087830 + ... + 9637088983.

It is an arithmetic number, because the mean of its divisors is an integer number (2785118549623).

Almost surely, 2^{11121200021101} is an apocalyptic number.

It is an amenable number.

11121200021101 is a deficient number, since it is larger than the sum of its proper divisors (19274177391).

11121200021101 is an equidigital number, since it uses as much as digits as its factorization.

11121200021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19274177390.

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

Adding to 11121200021101 its reverse (10112000212111), we get a palindrome (21233200233212).

The spelling of 11121200021101 in words is "eleven trillion, one hundred twenty-one billion, two hundred million, twenty-one thousand, one hundred one".