11011033021 has 4 divisors (see below), whose sum is σ = 11279594844. Its totient is φ = 10742471200.

The previous prime is 11011033001. The next prime is 11011033031. The reversal of 11011033021 is 12033011011.

11011033021 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.

It can be written as a sum of positive squares in 2 ways, for example, as 993825625 + 10017207396 = 31525^2 + 100086^2 .

It is a cyclic number.

It is not a de Polignac number, because 11011033021 - 2⁹ = 11011032509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11011032992 and 11011033010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011033001) 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, 134280850 + ... + 134280931.

It is an arithmetic number, because the mean of its divisors is an integer number (2819898711).

Almost surely, 2^11011033021 is an apocalyptic number.

It is an amenable number.

11011033021 is a deficient number, since it is larger than the sum of its proper divisors (268561823).

11011033021 is an equidigital number, since it uses as much as digits as its factorization.

11011033021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268561822.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 11011033021 its reverse (12033011011), we get a palindrome (23044044032).

The spelling of 11011033021 in words is "eleven billion, eleven million, thirty-three thousand, twenty-one".