13033021 has 4 divisors (see below), whose sum is σ = 13152700. Its totient is φ = 12913344.

The previous prime is 13033003. The next prime is 13033049. The reversal of 13033021 is 12033031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12033031 = 113 ⋅106487.

It can be written as a sum of positive squares in 2 ways, for example, as 10310521 + 2722500 = 3211^2 + 1650^2 .

It is a cyclic number.

It is not a de Polignac number, because 13033021 - 2¹¹ = 13030973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13032992 and 13033010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13033001) 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, 59676 + ... + 59893.

It is an arithmetic number, because the mean of its divisors is an integer number (3288175).

Almost surely, 2^13033021 is an apocalyptic number.

It is an amenable number.

13033021 is a deficient number, since it is larger than the sum of its proper divisors (119679).

13033021 is a wasteful number, since it uses less digits than its factorization.

13033021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119678.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 13033021 is about 3610.1275600732. The cubic root of 13033021 is about 235.3323861445.

Adding to 13033021 its reverse (12033031), we get a palindrome (25066052).

The spelling of 13033021 in words is "thirteen million, thirty-three thousand, twenty-one".