13133021 has 4 divisors (see below), whose sum is σ = 14326944. Its totient is φ = 11939100.

The previous prime is 13133011. The next prime is 13133033. The reversal of 13133021 is 12033131.

13133021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13133021 - 2¹⁸ = 12870877 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 = 13132987 and 13133005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13133011) 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, 596945 + ... + 596966.

It is an arithmetic number, because the mean of its divisors is an integer number (3581736).

Almost surely, 2^13133021 is an apocalyptic number.

13133021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13133021 is a deficient number, since it is larger than the sum of its proper divisors (1193923).

13133021 is a wasteful number, since it uses less digits than its factorization.

13133021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193922.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 13133021 is about 3623.9510206403. The cubic root of 13133021 is about 235.9327408159.

Adding to 13133021 its reverse (12033131), we get a palindrome (25166152).

It can be divided in two parts, 1313 and 3021, that added together give a palindrome (4334).

The spelling of 13133021 in words is "thirteen million, one hundred thirty-three thousand, twenty-one".