13244203021 has 16 divisors (see below), whose sum is σ = 15557771520. Its totient is φ = 11036511360.

The previous prime is 13244202997. The next prime is 13244203033. The reversal of 13244203021 is 12030244231.

It is not a de Polignac number, because 13244203021 - 2⁵ = 13244202989 is a prime.

It is a super-2 number, since 2×13244203021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13244202983 and 13244203001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13244204021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314016 + ... + 353686.

It is an arithmetic number, because the mean of its divisors is an integer number (972360720).

Almost surely, 2^13244203021 is an apocalyptic number.

It is an amenable number.

13244203021 is a deficient number, since it is larger than the sum of its proper divisors (2313568499).

13244203021 is a wasteful number, since it uses less digits than its factorization.

13244203021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41004.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 13244203021 its reverse (12030244231), we get a palindrome (25274447252).

The spelling of 13244203021 in words is "thirteen billion, two hundred forty-four million, two hundred three thousand, twenty-one".