13301021 has 8 divisors (see below), whose sum is σ = 14115384. Its totient is φ = 12490240.

The previous prime is 13301017. The next prime is 13301023. The reversal of 13301021 is 12010331.

It can be written as a sum of positive squares in 4 ways, for example, as 1836025 + 11464996 = 1355^2 + 3386^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13301021 - 2² = 13301017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13300993 and 13301011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13301023) 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, 13481 + ... + 14433.

It is an arithmetic number, because the mean of its divisors is an integer number (1764423).

Almost surely, 2^13301021 is an apocalyptic number.

It is an amenable number.

13301021 is a deficient number, since it is larger than the sum of its proper divisors (814363).

13301021 is an equidigital number, since it uses as much as digits as its factorization.

13301021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791.

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

The square root of 13301021 is about 3647.0564843446. The cubic root of 13301021 is about 236.9345128161.

Adding to 13301021 its reverse (12010331), we get a palindrome (25311352).

The spelling of 13301021 in words is "thirteen million, three hundred one thousand, twenty-one".