321225510513 has 4 divisors (see below), whose sum is σ = 428300680688. Its totient is φ = 214150340340.

The previous prime is 321225510493. The next prime is 321225510521. The reversal of 321225510513 is 315015522123.

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: 315015522123 = 3 ⋅105005174041.

It is not a de Polignac number, because 321225510513 - 2¹⁴ = 321225494129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321225510413) 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, 53537585083 + ... + 53537585088.

It is an arithmetic number, because the mean of its divisors is an integer number (107075170172).

Almost surely, 2^321225510513 is an apocalyptic number.

It is an amenable number.

321225510513 is a deficient number, since it is larger than the sum of its proper divisors (107075170175).

321225510513 is a wasteful number, since it uses less digits than its factorization.

321225510513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107075170174.

The product of its (nonzero) digits is 9000, while the sum is 30.

The spelling of 321225510513 in words is "three hundred twenty-one billion, two hundred twenty-five million, five hundred ten thousand, five hundred thirteen".