11231211133 has 8 divisors (see below), whose sum is σ = 11489098752. Its totient is φ = 10974112176.

The previous prime is 11231211119. The next prime is 11231211157. The reversal of 11231211133 is 33111213211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11231211133 - 2²⁹ = 10694340221 is a prime.

It is a super-2 number, since 2×11231211133² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11231211133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231211193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168310 + ... + 225367.

It is an arithmetic number, because the mean of its divisors is an integer number (1436137344).

Almost surely, 2^11231211133 is an apocalyptic number.

It is an amenable number.

11231211133 is a deficient number, since it is larger than the sum of its proper divisors (257887619).

11231211133 is an equidigital number, since it uses as much as digits as its factorization.

11231211133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394331.

The product of its digits is 108, while the sum is 19.

Adding to 11231211133 its reverse (33111213211), we get a palindrome (44342424344).

The spelling of 11231211133 in words is "eleven billion, two hundred thirty-one million, two hundred eleven thousand, one hundred thirty-three".