11020321 has 12 divisors (see below), whose sum is σ = 12140220. Its totient is φ = 9996480.

The previous prime is 11020313. The next prime is 11020327. The reversal of 11020321 is 12302011.

It can be written as a sum of positive squares in 6 ways, for example, as 4669921 + 6350400 = 2161^2 + 2520^2 .

It is not a de Polignac number, because 11020321 - 2³ = 11020313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11020298 and 11020307.

It is not an unprimeable number, because it can be changed into a prime (11020327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9775 + ... + 10843.

It is an arithmetic number, because the mean of its divisors is an integer number (1011685).

Almost surely, 2^11020321 is an apocalyptic number.

It is an amenable number.

11020321 is a deficient number, since it is larger than the sum of its proper divisors (1119899).

11020321 is a wasteful number, since it uses less digits than its factorization.

11020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156 (or 1143 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 11020321 is about 3319.6868828249. The cubic root of 11020321 is about 222.5348748095.

Adding to 11020321 its reverse (12302011), we get a palindrome (23322332).

It can be divided in two parts, 110203 and 21, that added together give a square (110224 = 332²).

The spelling of 11020321 in words is "eleven million, twenty thousand, three hundred twenty-one".