10331021 has 4 divisors (see below), whose sum is σ = 10500444. Its totient is φ = 10161600.

The previous prime is 10331017. The next prime is 10331039. The reversal of 10331021 is 12013301.

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 376996 + 9954025 = 614^2 + 3155^2 .

It is a cyclic number.

It is not a de Polignac number, because 10331021 - 2² = 10331017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10330993 and 10331011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10331011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84620 + ... + 84741.

It is an arithmetic number, because the mean of its divisors is an integer number (2625111).

Almost surely, 2^10331021 is an apocalyptic number.

It is an amenable number.

10331021 is a deficient number, since it is larger than the sum of its proper divisors (169423).

10331021 is an equidigital number, since it uses as much as digits as its factorization.

10331021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169422.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 10331021 is about 3214.1905668457. The cubic root of 10331021 is about 217.7949211846.

Adding to 10331021 its reverse (12013301), we get a palindrome (22344322).

The spelling of 10331021 in words is "ten million, three hundred thirty-one thousand, twenty-one".