11303211123111 has 4 divisors (see below), whose sum is σ = 15070948164152. Its totient is φ = 7535474082072.

The previous prime is 11303211123109. The next prime is 11303211123157. The reversal of 11303211123111 is 11132111230311.

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

It is not a de Polignac number, because 11303211123111 - 2¹ = 11303211123109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11303211122111) 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, 1883868520516 + ... + 1883868520521.

It is an arithmetic number, because the mean of its divisors is an integer number (3767737041038).

Almost surely, 2^{11303211123111} is an apocalyptic number.

11303211123111 is a deficient number, since it is larger than the sum of its proper divisors (3767737041041).

11303211123111 is an equidigital number, since it uses as much as digits as its factorization.

11303211123111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3767737041040.

The product of its (nonzero) digits is 108, while the sum is 21.

Adding to 11303211123111 its reverse (11132111230311), we get a palindrome (22435322353422).

The spelling of 11303211123111 in words is "eleven trillion, three hundred three billion, two hundred eleven million, one hundred twenty-three thousand, one hundred eleven".