10120321 has 4 divisors (see below), whose sum is σ = 10715652. Its totient is φ = 9524992.

The previous prime is 10120309. The next prime is 10120339. The reversal of 10120321 is 12302101.

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 7639696 + 2480625 = 2764^2 + 1575^2 .

It is a cyclic number.

It is not a de Polignac number, because 10120321 - 2⁵ = 10120289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10120298 and 10120307.

It is not an unprimeable number, because it can be changed into a prime (10120361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297640 + ... + 297673.

It is an arithmetic number, because the mean of its divisors is an integer number (2678913).

Almost surely, 2^10120321 is an apocalyptic number.

It is an amenable number.

10120321 is a deficient number, since it is larger than the sum of its proper divisors (595331).

10120321 is an equidigital number, since it uses as much as digits as its factorization.

10120321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595330.

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

The square root of 10120321 is about 3181.2451964600. The cubic root of 10120321 is about 216.3041055435.

Adding to 10120321 its reverse (12302101), we get a palindrome (22422422).

The spelling of 10120321 in words is "ten million, one hundred twenty thousand, three hundred twenty-one".