11133111213 has 24 divisors (see below), whose sum is σ = 18652781888. Its totient is φ = 6266823552.

The previous prime is 11133111191. The next prime is 11133111217. The reversal of 11133111213 is 31211133111.

11133111213 is a `hidden beast` number, since 111 + 331 + 11 + 213 = 666.

It is not a de Polignac number, because 11133111213 - 2²⁰ = 11132062637 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 (11133111217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1314556 + ... + 1322997.

Almost surely, 2^11133111213 is an apocalyptic number.

It is an amenable number.

11133111213 is a deficient number, since it is larger than the sum of its proper divisors (7519670675).

11133111213 is a wasteful number, since it uses less digits than its factorization.

11133111213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2637633 (or 2637630 counting only the distinct ones).

The product of its digits is 54, while the sum is 18.

Adding to 11133111213 its reverse (31211133111), we get a palindrome (42344244324).

The spelling of 11133111213 in words is "eleven billion, one hundred thirty-three million, one hundred eleven thousand, two hundred thirteen".