11033021021 has 4 divisors (see below), whose sum is σ = 12036022944. Its totient is φ = 10030019100.

The previous prime is 11033020963. The next prime is 11033021047. The reversal of 11033021021 is 12012033011.

11033021021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-11033021021 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11033020987 and 11033021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11033021071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501500945 + ... + 501500966.

It is an arithmetic number, because the mean of its divisors is an integer number (3009005736).

Almost surely, 2^11033021021 is an apocalyptic number.

11033021021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11033021021 is a deficient number, since it is larger than the sum of its proper divisors (1003001923).

11033021021 is a wasteful number, since it uses less digits than its factorization.

11033021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003001922.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 11033021021 its reverse (12012033011), we get a palindrome (23045054032).

The spelling of 11033021021 in words is "eleven billion, thirty-three million, twenty-one thousand, twenty-one".