11131213333 has 4 divisors (see below), whose sum is σ = 11241423468. Its totient is φ = 11021003200.

The previous prime is 11131213319. The next prime is 11131213351. The reversal of 11131213333 is 33331213111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10741664164 + 389549169 = 103642^2 + 19737^2 .

It is a cyclic number.

It is not a de Polignac number, because 11131213333 - 2³³ = 2541278741 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 (11131273333) 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, 55104916 + ... + 55105117.

It is an arithmetic number, because the mean of its divisors is an integer number (2810355867).

Almost surely, 2^11131213333 is an apocalyptic number.

It is an amenable number.

11131213333 is a deficient number, since it is larger than the sum of its proper divisors (110210135).

11131213333 is a wasteful number, since it uses less digits than its factorization.

11131213333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110210134.

The product of its digits is 486, while the sum is 22.

Adding to 11131213333 its reverse (33331213111), we get a palindrome (44462426444).

The spelling of 11131213333 in words is "eleven billion, one hundred thirty-one million, two hundred thirteen thousand, three hundred thirty-three".