11121133133 has 4 divisors (see below), whose sum is σ = 12132145248. Its totient is φ = 10110121020.

The previous prime is 11121133103. The next prime is 11121133141. The reversal of 11121133133 is 33133112111.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11121133133 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 (11121133103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505506041 + ... + 505506062.

It is an arithmetic number, because the mean of its divisors is an integer number (3033036312).

Almost surely, 2^11121133133 is an apocalyptic number.

It is an amenable number.

11121133133 is a deficient number, since it is larger than the sum of its proper divisors (1011012115).

11121133133 is a wasteful number, since it uses less digits than its factorization.

11121133133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011012114.

The product of its digits is 162, while the sum is 20.

Adding to 11121133133 its reverse (33133112111), we get a palindrome (44254245244).

The spelling of 11121133133 in words is "eleven billion, one hundred twenty-one million, one hundred thirty-three thousand, one hundred thirty-three".