11001020111201 has 4 divisors (see below), whose sum is σ = 11001128960004. Its totient is φ = 11000911262400.

The previous prime is 11001020111197. The next prime is 11001020111219. The reversal of 11001020111201 is 10211102010011.

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 5688105750625 + 5312914360576 = 2384975^2 + 2304976^2 .

It is a cyclic number.

It is not a de Polignac number, because 11001020111201 - 2² = 11001020111197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11001020111261) 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, 54272660 + ... + 54474981.

It is an arithmetic number, because the mean of its divisors is an integer number (2750282240001).

Almost surely, 2^{11001020111201} is an apocalyptic number.

It is an amenable number.

11001020111201 is a deficient number, since it is larger than the sum of its proper divisors (108848803).

11001020111201 is a wasteful number, since it uses less digits than its factorization.

11001020111201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108848802.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11001020111201 its reverse (10211102010011), we get a palindrome (21212122121212).

The spelling of 11001020111201 in words is "eleven trillion, one billion, twenty million, one hundred eleven thousand, two hundred one".