13200231021 has 4 divisors (see below), whose sum is σ = 17600308032. Its totient is φ = 8800154012.

The previous prime is 13200230983. The next prime is 13200231041. The reversal of 13200231021 is 12013200231.

13200231021 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, and also an emirpimes, since its reverse is a distinct semiprime: 12013200231 = 3 ⋅4004400077.

It is a cyclic number.

It is not a de Polignac number, because 13200231021 - 2¹⁰ = 13200229997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13200231041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2200038501 + ... + 2200038506.

It is an arithmetic number, because the mean of its divisors is an integer number (4400077008).

Almost surely, 2^13200231021 is an apocalyptic number.

It is an amenable number.

13200231021 is a deficient number, since it is larger than the sum of its proper divisors (4400077011).

13200231021 is an equidigital number, since it uses as much as digits as its factorization.

13200231021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4400077010.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 13200231021 its reverse (12013200231), we get a palindrome (25213431252).

The spelling of 13200231021 in words is "thirteen billion, two hundred million, two hundred thirty-one thousand, twenty-one".