11321021 has 8 divisors (see below), whose sum is σ = 11539584. Its totient is φ = 11104240.

The previous prime is 11321003. The next prime is 11321029. The reversal of 11321021 is 12012311.

11321021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 11321021 - 2⁶ = 11320957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11320993 and 11321011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321029) 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, 22256 + ... + 22758.

It is an arithmetic number, because the mean of its divisors is an integer number (1442448).

Almost surely, 2^11321021 is an apocalyptic number.

It is an amenable number.

11321021 is a deficient number, since it is larger than the sum of its proper divisors (218563).

11321021 is an equidigital number, since it uses as much as digits as its factorization.

11321021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 11321021 is about 3364.6724952066. The cubic root of 11321021 is about 224.5407653778.

Adding to 11321021 its reverse (12012311), we get a palindrome (23333332).

The spelling of 11321021 in words is "eleven million, three hundred twenty-one thousand, twenty-one".