11111011001121 has 4 divisors (see below), whose sum is σ = 14814681334832. Its totient is φ = 7407340667412.

The previous prime is 11111011001117. The next prime is 11111011001141. The reversal of 11111011001121 is 12110011011111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11111011001121 - 2² = 11111011001117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11111011001097 and 11111011001106.

It is not an unprimeable number, because it can be changed into a prime (11111011001141) 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, 1851835166851 + ... + 1851835166856.

It is an arithmetic number, because the mean of its divisors is an integer number (3703670333708).

Almost surely, 2^{11111011001121} is an apocalyptic number.

It is an amenable number.

11111011001121 is a deficient number, since it is larger than the sum of its proper divisors (3703670333711).

11111011001121 is an equidigital number, since it uses as much as digits as its factorization.

11111011001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3703670333710.

The product of its (nonzero) digits is 2, while the sum is 12.

Adding to 11111011001121 its reverse (12110011011111), we get a palindrome (23221022012232).

The spelling of 11111011001121 in words is "eleven trillion, one hundred eleven billion, eleven million, one thousand, one hundred twenty-one".