13244021 has 8 divisors (see below), whose sum is σ = 15794304. Its totient is φ = 10858320.

The previous prime is 13244009. The next prime is 13244027. The reversal of 13244021 is 12044231.

13244021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13244021 - 2¹⁰ = 13242997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13244027) 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, 40970 + ... + 41291.

It is an arithmetic number, because the mean of its divisors is an integer number (1974288).

Almost surely, 2^13244021 is an apocalyptic number.

It is an amenable number.

13244021 is a deficient number, since it is larger than the sum of its proper divisors (2550283).

13244021 is an equidigital number, since it uses as much as digits as its factorization.

13244021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82291.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 13244021 is about 3639.2335731580. The cubic root of 13244021 is about 236.5955763027.

Adding to 13244021 its reverse (12044231), we get a palindrome (25288252).

The spelling of 13244021 in words is "thirteen million, two hundred forty-four thousand, twenty-one".