12315051321 has 8 divisors (see below), whose sum is σ = 16433220000. Its totient is φ = 8203458432.

The previous prime is 12315051319. The next prime is 12315051337.

12315051321 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12315051321 - 2¹ = 12315051319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12315051291 and 12315051300.

It is not an unprimeable number, because it can be changed into a prime (12315051341) 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, 1639575 + ... + 1647068.

It is an arithmetic number, because the mean of its divisors is an integer number (2054152500).

Almost surely, 2^12315051321 is an apocalyptic number.

It is an amenable number.

12315051321 is a deficient number, since it is larger than the sum of its proper divisors (4118168679).

12315051321 is a wasteful number, since it uses less digits than its factorization.

12315051321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3287895.

The product of its (nonzero) digits is 900, while the sum is 24.

It can be divided in two parts, 123150 and 51321, that added together give a palindrome (174471).

The spelling of 12315051321 in words is "twelve billion, three hundred fifteen million, fifty-one thousand, three hundred twenty-one".