11121000102001 has 4 divisors (see below), whose sum is σ = 11231109014004. Its totient is φ = 11010891190000.

The previous prime is 11121000101989. The next prime is 11121000102029. The reversal of 11121000102001 is 10020100012111.

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 5333439211776 + 5787560890225 = 2309424^2 + 2405735^2 .

It is a cyclic number.

It is not a de Polignac number, because 11121000102001 - 2¹⁹ = 11120999577713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11121000162001) 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, 55054455850 + ... + 55054456051.

It is an arithmetic number, because the mean of its divisors is an integer number (2807777253501).

Almost surely, 2^{11121000102001} is an apocalyptic number.

It is an amenable number.

11121000102001 is a deficient number, since it is larger than the sum of its proper divisors (110108912003).

11121000102001 is a wasteful number, since it uses less digits than its factorization.

11121000102001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110108912002.

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

Adding to 11121000102001 its reverse (10020100012111), we get a palindrome (21141100114112).

The spelling of 11121000102001 in words is "eleven trillion, one hundred twenty-one billion, one hundred two thousand, one".