13232312021 has 4 divisors (see below), whose sum is σ = 13232543232. Its totient is φ = 13232080812.

The previous prime is 13232312017. The next prime is 13232312033. The reversal of 13232312021 is 12021323231.

13232312021 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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13232312021 - 2² = 13232312017 is a prime.

It is a super-2 number, since 2×13232312021² (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 = 13232311984 and 13232312002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13232312081) 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, 40556 + ... + 167658.

It is an arithmetic number, because the mean of its divisors is an integer number (3308135808).

Almost surely, 2^13232312021 is an apocalyptic number.

It is an amenable number.

13232312021 is a deficient number, since it is larger than the sum of its proper divisors (231211).

13232312021 is a wasteful number, since it uses less digits than its factorization.

13232312021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231210.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13232312021 its reverse (12021323231), we get a palindrome (25253635252).

The spelling of 13232312021 in words is "thirteen billion, two hundred thirty-two million, three hundred twelve thousand, twenty-one".