11001203311 has 4 divisors (see below), whose sum is σ = 12572803792. Its totient is φ = 9429602832.

The previous prime is 11001203309. The next prime is 11001203327. The reversal of 11001203311 is 11330210011.

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 11001203311 - 2¹ = 11001203309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11001203291 and 11001203300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001203341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 785800230 + ... + 785800243.

It is an arithmetic number, because the mean of its divisors is an integer number (3143200948).

Almost surely, 2^11001203311 is an apocalyptic number.

11001203311 is a deficient number, since it is larger than the sum of its proper divisors (1571600481).

11001203311 is an equidigital number, since it uses as much as digits as its factorization.

11001203311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571600480.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 11001203311 its reverse (11330210011), we get a palindrome (22331413322).

The spelling of 11001203311 in words is "eleven billion, one million, two hundred three thousand, three hundred eleven".