12821035 has 4 divisors (see below), whose sum is σ = 15385248. Its totient is φ = 10256824.

The previous prime is 12821027. The next prime is 12821047. The reversal of 12821035 is 53012821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53012821 = 31 ⋅1710091.

It is a cyclic number.

It is not a de Polignac number, because 12821035 - 2³ = 12821027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12820997 and 12821015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1282099 + ... + 1282108.

It is an arithmetic number, because the mean of its divisors is an integer number (3846312).

Almost surely, 2^12821035 is an apocalyptic number.

12821035 is a deficient number, since it is larger than the sum of its proper divisors (2564213).

12821035 is an equidigital number, since it uses as much as digits as its factorization.

12821035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564212.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 12821035 is about 3580.6472878517. The cubic root of 12821035 is about 234.0494879139.

Adding to 12821035 its reverse (53012821), we get a palindrome (65833856).

The spelling of 12821035 in words is "twelve million, eight hundred twenty-one thousand, thirty-five".