1121123133111 has 4 divisors (see below), whose sum is σ = 1494830844152. Its totient is φ = 747415422072.

The previous prime is 1121123133061. The next prime is 1121123133113. The reversal of 1121123133111 is 1113313211211.

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

It is a de Polignac number, because none of the positive numbers 2^k-1121123133111 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 (1121123133113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186853855516 + ... + 186853855521.

It is an arithmetic number, because the mean of its divisors is an integer number (373707711038).

Almost surely, 2^{1121123133111} is an apocalyptic number.

1121123133111 is a deficient number, since it is larger than the sum of its proper divisors (373707711041).

1121123133111 is an equidigital number, since it uses as much as digits as its factorization.

1121123133111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373707711040.

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

Adding to 1121123133111 its reverse (1113313211211), we get a palindrome (2234436344322).

The spelling of 1121123133111 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-three million, one hundred thirty-three thousand, one hundred eleven".