13013021 has 8 divisors (see below), whose sum is σ = 14951424. Its totient is φ = 11094480.

The previous prime is 13012999. The next prime is 13013023. The reversal of 13013021 is 12031031.

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 13013021 - 2¹⁴ = 12996637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13012993 and 13013011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13013023) 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, 3530 + ... + 6203.

It is an arithmetic number, because the mean of its divisors is an integer number (1868928).

Almost surely, 2^13013021 is an apocalyptic number.

It is an amenable number.

13013021 is a deficient number, since it is larger than the sum of its proper divisors (1938403).

13013021 is an equidigital number, since it uses as much as digits as its factorization.

13013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9931.

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

The square root of 13013021 is about 3607.3565113529. The cubic root of 13013021 is about 235.2119470095.

Adding to 13013021 its reverse (12031031), we get a palindrome (25044052).

The spelling of 13013021 in words is "thirteen million, thirteen thousand, twenty-one".