11011211011003 has 4 divisors (see below), whose sum is σ = 12584241155440. Its totient is φ = 9438180866568.

The previous prime is 11011211010991. The next prime is 11011211011007. The reversal of 11011211011003 is 30011011211011.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11011211011003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11011211011007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 786515072208 + ... + 786515072221.

It is an arithmetic number, because the mean of its divisors is an integer number (3146060288860).

Almost surely, 2^{11011211011003} is an apocalyptic number.

11011211011003 is a deficient number, since it is larger than the sum of its proper divisors (1573030144437).

11011211011003 is an equidigital number, since it uses as much as digits as its factorization.

11011211011003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573030144436.

The product of its (nonzero) digits is 6, while the sum is 13.

Adding to 11011211011003 its reverse (30011011211011), we get a palindrome (41022222222014).

The spelling of 11011211011003 in words is "eleven trillion, eleven billion, two hundred eleven million, eleven thousand, three".