11231322133 has 4 divisors (see below), whose sum is σ = 11240914528. Its totient is φ = 11221729740.

The previous prime is 11231322131. The next prime is 11231322143. The reversal of 11231322133 is 33122313211.

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 not a de Polignac number, because 11231322133 - 2¹ = 11231322131 is a prime.

It is a super-2 number, since 2×11231322133² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231322131) 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, 4794441 + ... + 4796782.

It is an arithmetic number, because the mean of its divisors is an integer number (2810228632).

Almost surely, 2^11231322133 is an apocalyptic number.

It is an amenable number.

11231322133 is a deficient number, since it is larger than the sum of its proper divisors (9592395).

11231322133 is an equidigital number, since it uses as much as digits as its factorization.

11231322133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9592394.

The product of its digits is 648, while the sum is 22.

Adding to 11231322133 its reverse (33122313211), we get a palindrome (44353635344).

The spelling of 11231322133 in words is "eleven billion, two hundred thirty-one million, three hundred twenty-two thousand, one hundred thirty-three".