11133233021 has 4 divisors (see below), whose sum is σ = 11137748352. Its totient is φ = 11128717692.

The previous prime is 11133233017. The next prime is 11133233039. The reversal of 11133233021 is 12033233111.

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 11133233021 - 2² = 11133233017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11133232984 and 11133233002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11133223021) 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, 2253965 + ... + 2258898.

It is an arithmetic number, because the mean of its divisors is an integer number (2784437088).

Almost surely, 2^11133233021 is an apocalyptic number.

It is an amenable number.

11133233021 is a deficient number, since it is larger than the sum of its proper divisors (4515331).

11133233021 is an equidigital number, since it uses as much as digits as its factorization.

11133233021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4515330.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 11133233021 its reverse (12033233111), we get a palindrome (23166466132).

The spelling of 11133233021 in words is "eleven billion, one hundred thirty-three million, two hundred thirty-three thousand, twenty-one".