13021045 has 16 divisors (see below), whose sum is σ = 16232832. Its totient is φ = 10019520.

The previous prime is 13021033. The next prime is 13021049. The reversal of 13021045 is 54012031.

It is not a de Polignac number, because 13021045 - 2¹¹ = 13018997 is a prime.

It is a super-2 number, since 2×13021045² = 339095225784050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14839 + ... + 15691.

It is an arithmetic number, because the mean of its divisors is an integer number (1014552).

Almost surely, 2^13021045 is an apocalyptic number.

It is an amenable number.

13021045 is a deficient number, since it is larger than the sum of its proper divisors (3211787).

13021045 is an equidigital number, since it uses as much as digits as its factorization.

13021045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 13021045 is about 3608.4685117096. The cubic root of 13021045 is about 235.2602820035.

Adding to 13021045 its reverse (54012031), we get a palindrome (67033076).

The spelling of 13021045 in words is "thirteen million, twenty-one thousand, forty-five".