11243120201 has 4 divisors (see below), whose sum is σ = 11243362500. Its totient is φ = 11242877904.

The previous prime is 11243120149. The next prime is 11243120209. The reversal of 11243120201 is 10202134211.

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 8290284601 + 2952835600 = 91051^2 + 54340^2 .

It is a cyclic number.

It is not a de Polignac number, because 11243120201 - 2⁶ = 11243120137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11243120201.

It is not an unprimeable number, because it can be changed into a prime (11243120209) 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, 27326 + ... + 152423.

It is an arithmetic number, because the mean of its divisors is an integer number (2810840625).

Almost surely, 2^11243120201 is an apocalyptic number.

It is an amenable number.

11243120201 is a deficient number, since it is larger than the sum of its proper divisors (242299).

11243120201 is an equidigital number, since it uses as much as digits as its factorization.

11243120201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242298.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 11243120201 its reverse (10202134211), we get a palindrome (21445254412).

The spelling of 11243120201 in words is "eleven billion, two hundred forty-three million, one hundred twenty thousand, two hundred one".