11005021 has 8 divisors (see below), whose sum is σ = 11353184. Its totient is φ = 10659600.

The previous prime is 11005019. The next prime is 11005037. The reversal of 11005021 is 12050011.

It is a happy number.

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 11005021 - 2¹ = 11005019 is a prime.

It is a super-2 number, since 2×11005021² = 242220974420882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11004989 and 11005007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11005051) 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, 9946 + ... + 10996.

It is an arithmetic number, because the mean of its divisors is an integer number (1419148).

Almost surely, 2^11005021 is an apocalyptic number.

It is an amenable number.

11005021 is a deficient number, since it is larger than the sum of its proper divisors (348163).

11005021 is a wasteful number, since it uses less digits than its factorization.

11005021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371.

The product of its (nonzero) digits is 10, while the sum is 10.

The square root of 11005021 is about 3317.3816482280. The cubic root of 11005021 is about 222.4318421037.

Adding to 11005021 its reverse (12050011), we get a palindrome (23055032).

The spelling of 11005021 in words is "eleven million, five thousand, twenty-one".